I installed a DOA 270 cam in my 22re powered 85 4Runner and noticed a slight increase in midrange power. I then welded up a new 2.25 exhaust and noticed another slight increase in power. Gas mileage stayed about the same after both mods. In retrospect I wouldn't do these mods again if I only wanted more power.

For pulling your boat a bone stock 22RE should have no problem at all. I just pulled a Four Winns bowrider (stern drive, 4.3, about 2500 lbs with trailer) from Phoenix to Pueblo West, Colorado with mine and it towed fine. I didn't go very fast over the passes, but it made it okay and on flat ground I maintained 65 mph with no problems. I towed my catamaran (total weight approx. 850 pounds) from Pueblo West to Salt Lake City recently and it was just fine. I expect your 16' fishing boat doesn't weigh over 1000 pounds so you'd hardly be able to tell it was there.

Allan