Sources

2026 MotoSurf Rulebook, 7 open

• Appendix 2, pages 74 to 94, and Appendix 3, pages 95 to 113, are scanned images with no text layer, so the text copy of this rulebook that this site reads from does not contain them. They were read from the page images on 2026-09-10, and what they hold is set out on the homologation page. Their appendix titles name two boards, which is misleading: both are UIM homologation forms covering the engine, exhaust, jet pump and electronics, and neither states a single board dimension, board mass or fin figure.
• Appendix 1 Pictures 1, 2 and 3 are images with no text, and page 73 was read the same way. Picture 2, the main fin scheme, turns out to be a silhouette carrying two labels and nothing else: no scale, no datum, no fin box type, no plug spacing, no angle and no tolerance.
• The 2026 renumbering was not carried through to the document's own cross references. Every per class pointer in Art. 301 still cites 2025 chapter numbers that do not exist in this edition. Two of those pointers carry the only positive tuning permission in the document, at Art. 301.01 and 301.04, so even the open classes' right to tune is anchored to an article that does not exist.
• Art. 505.03 c) specifies the battery telemetry as Big Endian, where the separate UIM MotoSurf Electric Rules 2025 specifies Little Endian and different CAN identifiers. Two sanctioning body documents contradict each other on the same interface. Both are recorded and neither is stored as the specification.
• The text copy cannot show a strike through. The 2026-05-20 correction on page 19 prints two of the Long Lap lines in Art. 302 struck through: the passage time of 20% to 50% of the average Stock Men lap, and the Long Lap as compensation for a missed buoy. The text copy keeps both as if they still stood. Found on 2026-10-07 by rendering page 19 of the corrected PDF; no other page from 19 to 42 carries the correction marking. The race weekend page does not use the struck lines, and sets out the missed buoy rules that remain at Art. 302.04, 317.03, 317.04, 317.05 and 318.05 without choosing between them.
• Page 36, the tables dividing riders from two, three or four groups into the four heats, and pages 38 to 41, the example timetable under Art. 321, are pictures with no text layer, so the text copy holds only their headings. Read from the PDF pages on 2026-10-07. The timetable does not match the articles around it: it names Stock R and Women, calls the Long Laps jokers as the 2024 edition did, gives lap counts that differ from Art. 307, and lists no warm up session. The race weekend page takes its order from the articles and does not reproduce either set of tables.
• Art. 302.03 b), the paragraph headed Red, says in its second sentence that a correctly passed buoy marked with a yellow sleeve is passed from the right side. The paragraph's first sentence and its picture caption name the red buoy. The PDF prints the same words as the text copy (page 21, read 2026-10-07), so the slip is the rulebook's. The race weekend page quotes it as printed.

2025 MotoSurf Rulebook, 2 open

• Art. 3.1.6.2, the Juniors Girls article, describes boys in its own words. The 2026 edition states each gender correctly.
• Junior age bands contradict each other inside this edition: Art. 3.1.6.1 and 3.1.6.2 say 8 to 14, Art. 4.3.2.2 says 8 to 15.

JetSurf owner manual, 3 open

• The maintenance interval table lost its columns when the manual was copied to text: every cell sits on a line of its own with no column markers, so which interval column a mark belongs to cannot be recovered. Only intervals the manual states in prose are used on this site.
• The manual states in its own words that it does not include detailed maintenance or repair instructions, and directs the reader to a maintenance manual it does not supply. That document is not held and is not published.
• Only the manual's text is held. Its pictures are not, so the board drawings cite them by the IMG number printed in each picture and its chapter 4 section; the same IMG number appears for more than one model, which is why the section is given too.

Promoter standings, 2022 to 2026, 5 open

• No table on the results centre is dated. The page carries no publication or correction date for any standing, so a table read later may differ from the one held here without anything on the page saying it changed.
• From 2021 to 2023 girls and boys share one Juniors table, so a junior girls' title cannot be read off position 1. The champions page takes the top girl's place from the table and the title from the season report, and says which position it used.
• Class names change every season with no table saying what continues what: Open becomes Elite in 2024 and Elite Men in 2026, Stock R becomes Stock R, Merlin Plus, and the 2025 Masters table becomes Masters Men in 2026. The champions page prints each season's own name rather than a joined up series.
• The 2026 tables were read with four of six rounds run, two Chinese rounds still empty. They are leaders, not champions, and no 2026 title row is held.
• The tables print one rider's given name with a grave accent, Tibor Ábrahàm, the same accent the 2025 rulebook cover prints on Kristýna Hrbková's surname. Hungarian uses no grave either. The same tables print Hrbková with an acute in 2023 and 2024.

Promoter standings, 2021, 2 open

• Extracted with pdftotext -raw, not -layout as the rulebooks were. The layout copy scrambled this document: it moved names and racing numbers between rows and printed season totals that do not add up from the round scores. The raw copy keeps each row whole, and its totals add up. Each class heading prints after its own table in the raw copy, not before it.
• Rider names are printed without accents, Zahorsky Lukas for Lukáš Záhorský, so a name on the champions page cannot be checked against this document letter for letter, only by its plain spelling.

Promoter season reports, 2016 to 2026, 8 open

• No standings table survives on the site for any season from 2014 to 2020. Titles in those years rest on the reports alone, and the champions page marks them so.
• The 2023 Stock report says Minseong Kim defended his title. The 2022 Stock champion was Down Kim, in the 2022 standings, the 2022 report and the 2023 Asian Championship report, so Minseong Kim's 2023 title was his first.
• Flavien Neyertz, 2014 champion, is listed under France in the post of 2016-04-25 and called a rider from Monaco in the post of 2016-07-01. Nothing else on the site settles it, and the champions page gives no country for him.
• Two reports date the sport from 2012, and one from 2018 says the series itself started in 2014. Both can be true, the sport against the series, and no report says so.
• The 2022 Stock R report says both title contenders stood on the top podium step as champions, and also that a technical discrepancy found on Matyáš Novotný's board moved the title to Alex Lukscheider. The standings have Lukscheider first.
• No 2020 champion is named anywhere. The 2020 posts record the Chinese rounds and Abu Dhabi postponed, Brno and Wyboston cancelled and Kazan moved to 2021, none of them reported as run, and the 2021 report calls Lukáš Záhorský's 2021 title his fourth, which only adds up with no title in 2020.
• Rider profile pages carry a season table whose final column gives first place to more than one rider in the same class and season, so it is not the season standing and nothing on this site rests on it.
• The 2026-09-09 Marbella preview calls Lukáš Záhorský a six-time world champion. The 2024 Croatia report counts his 2024 Electric title as his seventh. Six matches his Men and Open titles alone, so the champions page keeps all seven rows and the count is the promoter's to settle.