From my experience, of any GP stroke variation, I find the wing-type stroke to have the least tendency for blade flutter. And, as Kris has said, there are a few, sometimes very subtle, techniques and tricks that can be used to elimiate flutter.

-John

: I've got all three and any paddle can be used with a wing type stroke but
: either the GP or the Euro are unstable with that stroke (tend towards
: fluttering) and the wing is very stable using it. Wing's generally have a
: fair amount of twist built in and the others normally have none.

: Bill H.