I,ve had a Blackjack twice. Bought it new w/blind in late 80,s . Sold it when kids got big enough to hunt with me. Always regretted selling. Seen one come up for sale about 10 years ago and turned out was my old boat. Bought it back and built a sit up blind on it of my design from cordura nylon. Hunted it a lot for about 5 years and resold it to a member on here. First time around I had a new 25 Merc 2 stroke on it. It would fly. Second time around I put a Merc 15 2 stroke on it. Not enough motor. Took forever to plane with myself, decoys, blind & 70 lb. lab. 25 h.p. 2 stroke is the sweet spot for that hull loaded. The 15 would plane it fine with just me in it unloaded, just not loaded.