M_Boats: rudder replacement

Hello All; We are in need of a new rudder for our m17. I thought I would get some advice and suggestions from the Monty group before I made any decisions. I have looked at the Idasailor ( the newest version ) but have some concerns about the gas shock. If they are anything like the ones that are commonley used on autos and campers they seem to have a relative short life span. Are their any other alternative designs. I wish to install a kick-up style, as I think I dodged a bullet by not damaging the transom when shredding to splinters the old rudder. Cheers Jake Horine M 17 1977 #263 "Fortuna'