Sorry for the delay Red Fox, yes, I have a 4.5 cormorant with a 60 Big Foot Merc, not been out yet, but Devamarine said no probs at all with the Bigger lump, which weighs a lot less than a 50hp 4 stroke knitting machine. As for insurance no problem, done via Devamarine, excellent shop, staff and products.
.....estimated speed according to Mercury should be around 50 mph, should be fun.
Just finished waxing the lot again today, glad its indoors, just now having a blizzard !
Vulcan XH558 returns to the skies soon !!