Welcome to RIBnet Steve (please excuse the mess on here, but we have the decorators in
, as it were)
One up, I'm guessing that you're going to see speeds in excess of 20kts. Safe? Maybe not, but you'll be wearing a lifejacket and a killcord, so who cares?
Two practical tips. Get your tube pressures right and use a tiller extension - you'll need to get your weight well forward on liftoff.
I'm taking it as read that you have your safety sh1t sorted.