08 Puma I try to run the tanks evenly so I dont have unused fuel for a long time. Seem to like running on the rear tanks, only keep about 10 to 15 gallons in the seat tank. Have alot or seems to me I have better control of the bow lift and can keep a better eye on the rear tanks. Once I run some of the rear fuel out can get into fairly skinny water fishes flatter. Still tweaking on the speed numbers think my hot foot is messing with me on WOT. I only get to go every other weekend so yes I use marine stabil sometimes seafoam plus ringfree. Hammer has been running flawlessly need to just get more on the WOT RPMs. My .02 Have a great day.