I have a 22.5 foot Searay with a 350 EFI and i burn about 1 gph, one problem i have is if there is no wind or if i am trolling with the wind i have to use at least one bag. A kicker on your platform is an option to consider that is what I am doing. The other perk you need to look at is the extra room you will have for guests and gear with a bigger boat, plus a better ride in poor conditions. Either way you look at it you will definately save fuel compared to what you have now. Just my 2 cents.....good luck...