Hi Mac ... yes that one was a whisker under 25. Trolled sardine, either Sept or Oct.
Hi Marty ... by presentation I mean after you locate fish with a tube you can "hover" against wind drift and current drift maintaining position while both hands are free to cast at the fish. A yak (or boat) will drift off position unless someone is manning the oars, and a drogue will counteract wind but not current drift. If it's a yak and you are holding the paddle, who is holding the rod to cast? The pedal yaks Native Ultimate and Hobie Revo can do this already at a higher cost than normal SOTs, about 500-600 more. So I'm waiting for the new pedal kayaks to get cheaper .. then yaks have an answer to that, but tubes have it all along at no extra cost.
Storage refers mainly to leaving the yak outside the car. The tube goes in the boot. Handier when stopping over in strange towns for a meal or overnight.
As far as I see it the yaks are the better choice for trolling and for bigger waters. You won't ever see a float tube angler out in the sea where yaks are the answer.
But for small waters a tube weighs 12lbs and a yak about 60lbs. So carry or wheellie cart, I doubt I will ever see a kayak angler fishing a high altitude mountain lake with no road, that's prime float tube territory.
There is a summer winter difference too. Fish spread out more in summer which if you don't know where they are favours a kayak for searching fishing styles, like trolling. In winter they concentrate in certain spots more and the speed of kayaks is less useful for getting the fish, and precision of presentation counts for more.
It's horses for courses .... Marty said it depends on your circumstances and I'm totally in agreement with that.