Hi Bill,
As you probably know Jim Snyder has spent his entire career trying to
get rid of paddle flutter. He even went through some iterations where
he drilled holes in the paddles! The best he was able to accomplish
was coming up with a uniquely shaped small blade (Esoterick) that
swishes through the water much more smoothly than anything else I've
experienced.
www.jimisnyder.com for the best paddle you'll ever dip in the water!
But even Jim will tell you, he's reduced flutter to a minimum but not
eliminated it.
Mothra