Yep and only allow old school round nose hydro's
Why don't you just start a 20 thuinderboat class. If I where to build a model that looked like are old 145(now 2.5L) you guy's would say it is illegal and it was built back in 1982. We had recessed transoms and struts hanging off of them back then. Want pictures? Or should we just all run sport 20's and 40's that look like Miss Thriftway hulls, smoke some herb and say that's cool dude! I do not think you guy's know what the spirit of the hydroplane is. It has always been creativity not rules on hull design. Don't get me wrong riggers or modified riggers have no place in the sport hydro class.
Oh what here I found some pictures of past hydro's with recessed thin transoms and struts on the transom. How could they. don't they know it does nothing for the performace or handling or setup.