Hull type: tunnel hull with full length sponsons developed for sheet plywood planking. power: long shaft outboard motor to 140 hp. can the hull be extended or. Tech support. the best technical support: we will help you succeed! all our plans and kits come with full technical support. ask questions on our support web site. How fast does it go? for estimating the speed for small outboard planing boats see planing speed boat chart. this chart should be used for general estimates only..