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.
Commonwealth swimming team to blend debuts with experience
Commonwealth Games athletics squad in positive mood ahead of Glasgow
FC Isle of Man get pre-season underway with summer festival
Swimming: Oscar Maddrell becomes triple British champion
