ok I am wanting to build my own boat I have a 25 cc homelite motor to use I would be running in ruff and sometimes smooth water and I don't know if I should go with a deep-v or a Catamaran I want something that is going to be fast so if some would could help me with what one is better that would be great and then what size of prop would be the best I want something around 38-45 inches

thanks Chris

I deleted the posting that you made 4 days ago as that one started to get ugly. Please ask only once and only in one forum. I can move this to the Gas boat forum if you'd like as you may get more and better reponses there.
Building you own boat isn't as easy as you'd think, especially for the inexperienced. Your money might be better spent buying a used hull.
Look over there also to see that this isn't a first-time question. We get a lot of people would find old Homie's in junkpiles, garage sales, etc. that want to drop them in a boat. They find out that it isn't cheap to build one as the proper radio equipment and all of the hardware is expensive. Once they're done they will be majorly diappointed in how slow a stock Homie is.