I don't know exactly what to call this--or explain it, but here goes:

Sunday, beating to weather in 12 knots (+gusts -- my speedPuck registered 15.3 mph max speed), I noticed on several occasions that as the F16 accelerated into the puffs the rudders would lose attachment to the water flowing over them; thereby causing the steerage to be "squirrely" as the rudders attempted to "dig in" again.

Anyone experience this? Any explanation on why this occurs?