Vagabonds eased past struggling Moore 32-0 with a bonus point to boot at a wet and windy Ballafletcher.
Vagas led 10-0 at half-time thanks to a try from Akkie van den Berg, plus a conversion and penalty from Jonny Beckley.
In the second half, Vagas powered clear of the visitors.
Van den Berg picked up his second of the day, Leigh Kennaugh sneaked one in from close range and with the final play of the game Tom Gascoyne picked up the bonus point.
Beckley also added another two conversions and a penalty to his tally.
Tynwald pays tribute to career of Sir Mark Cavendish
Julian Trummer parts ways with Jackson Racing
Cycling: Sam Brand extends stay with Team Novo Nordisk
Hockey: Two Island players called up to Scotland youth squads
David Johnson to return to TT with Lee Hardy Racing