Flipping and pitching in and out of the reeds, weeds, or submerged trees is a favorite of mine, and the strong suit of a tubers approach. Tossing to specific targets I either use a backhanded sweeping motion or on the forehand, an exaggerated side arm. I hadn't really thought about it, but from the tube it is always a side to side movement for me. I am trying to hide from the target as well, so I am behind a tree or around "the corner" in weeds or reeds.
Stealth is the tubers advantage.
I hope this helps.