heck there are a bunch of take off yamaha tuner skis from the apex, vectors, sr viper and sidewinder that guys probably are looking to get rid of as they went aftermarket for handling.
Get newer Yamaha take-offs for not a lot and put Bergstrom Triple points on them. I'm cheap like that.
Unless you get into the deep.
Simmons Gen I --- 6"
Simmons Gen II -- 10"
Simmons Gen III - 8"