You need to get at least an 11.0 inflatable (usually 10'6' or so) to have enought carrying capacity and stability. If you pay the extra for a RIb you will never regret it, they are wonderful dingy's.
Even a 2hp will do the job, a 6hp is quite adequate and 8hp will plane the dingy at 20MPH+ with two POB. More hp is of little value.
Certified...in several regards...
Last edited by sailingfool; 10-14-2009 at 12:28 PM.