I just put a Suzuki 6hp kicker on the starboard side hooked right to the transom and it works great. It was a tight fit getting the clamps over the transom on the 22 as there's maybe an 1/8" to spare.
BUT, I ordered a 6hp longshaft not knowing that Suzuki already has added 2 extra inches to their short and longshaft small engines and hence I could have bought the short shaft, which comes in both black and white (the longshaft only is available in black) and the ventilation plate of the shortshaft would have lined up less than an inch above the bottom of the boat which is perfectly okay for a kicker! The shortshaft would also keeps the bottom of the engine well out of the water when tilted up. Additionally, the engine also hooks to the boat gas tanks at the fuel/water separator or uses it's internal tank.