I'm new here, but I tube along with two buddies. I am OLD SCHOOL, still using my 10+ year old Bucks Bags Buckaroo and freezing my balls off in Mammoth Lakes area lakes at the end of trout season.
I haven't done much tubing this year though. I did hit The Castic Lagoon early this year and it was very windy which made it a pain to get around the Lagoon. Wore me out.
If you have a Fish Cat 4 I'd go with some nice Force Fins. They are pricey but worth it. I am in WAY better shape than my two buddies with Fish Cat 4's and Force Fins and they kill me in the water. I think that is a killer combo. My Buckaroo doesn't help, but my fins suck too. I'm holding out for either a pontoon boat or a kayak when I upgrade.