IV given my prowler a fair bit of S#!^ since I got it, decent gouges, seat straps are fked, sounder needs regooping I think, and a bent rudder.
I think I should take the rudder off and bash it flat with a Mallet, just wanting a do or do not from the brainstrust on the rudder

Doesn't matter much if bent in same plane, only really a problem if twisted.

Keith it doesn't seem to affect handling, just cosmetic I guess, it's something I look at and shake my head a little and was wondering if I should try or will I risk it breaking

careful application of heat from a heat gun may help, it is formed with heat, just a guess.
Friend of mine is a plastics engineer when he gets back from OS I will ask him if I remember.

Guessing the yak doc will have the best info on this, now you mention plastic. I presumed the rudder was a different material, not sure what I thought thou