For comparison have attached a pic (not the best) which shows that with the lightweight (120kg) Yam 90 my sponsons sit clear of the water (50 /60mm at rest).....you can just make out the gap in this pic....I know it's underway, but v slow.
I hadn't ever really paid much attention to other Ribs and how they sat at rest, but looking through pics, most /lots with bigger engines seem to have the sponsons resting in the water (at the rear) at rest..........Am going to do a test with additional weight when i get back from Poole....
have dropped you a PM....Thanks mate