Hello guys , i've found a guy here in Montreal , he made those side vent but flat with a sheet of stainless and he put hole on it , like the baja outlaw 29 2005,
If you are interested i will send you is name , but i think he don't speak english , i will try to translate if you want...
Or i can ask to Alain Aroum , the owner of a fiberglass custom canoe shop if he can copy that .. i've got the same (i think ) on my scarab 29 2000, and they are in pretty good shape...
Let me know
Frank