He may well be Colin he was very active during that time frame, i have some documents from model boat mag dated October 74 with a few page blurb of the Keighley event (aug 17,18,19) to which my dad is referenced by name and a photo of his boat on page 421 if you have access to the archives, as snipped to quote the magazine
''during the early stages there was an interesting almost private duel between Chris Moore (my father) and Andre Brandt, with both boats dicing around the course for a long time, neck and neck; in the end both suffered engine failure, Chris having to eventually retire at 187 laps''
I also have the model boats mag from oct 72 of the race events my father took place in pages 440 on the lap table showing my dad overall 1st place
There is also dads endurance racing record book from 74 world championships, signed by everyone who entered that event, to achieve 3rd dad totalled 251 laps in 2 hours 2nd went to J. Klawitter of Germany with 266 laps and first went to G. Merlotti of Italy with 316 laps
I will try to get these documents scanned in, but of all the things i own a scanner is not one of them, and a photo will not show up the small text good enough to read ( i tryied)