RE: Thunder Cat 31
*agreed, quite a bit better than the stock rudder....ive read this forum thread front to back and appreciate and learned a bit from all the posters here let alonea few other sites i readthroughbefore deciding to get this boat... with experience in rc planes and racing cars ya gotta worry about the drag as much as you do boats. to me i think it would be better going for a different rudder though, breakaway bolt design with a narrower tapered design, and having the water input rudder seems to be more appealing than the non one using a metal tube water pickup somewhere else mounted on the boat, which would cause more drag...as for the length, it can always be cut down w/o having to worry if you are too close to the water pickup...plenty of room for this application. hence the reason im opting for the speedmaster setup for mine....