RE: plans
Various plans available [link=http://www.modelpowerboat.com/forum/downloads/cat-2.htm]here.[/link] Prowler is an updated version of Wildthing, both at 48" and both popular and proven designs. 72" is a big boat and builds a little to long for the width so handling suffers. If you search the gas forum for build threads you will get some blow by blow accounts of the build process.