Waitaminit... 4hp on a Hunter 185!
Seem like a 4 hp outboard is overkill for an 18.5 footer. I drove my H-216 for a long time with a trolling motor. I now have a 9.9 hp 2-stroke Nissan I got for free and it is overkill...I can almost plane. Trolling motors have obvious drawbacks: might be hard to buck a good wind or current, you only have about 3 hours of run time (but it IS a sailboat), too quiet, battery has to be charged (I rigged a charger connection so I didn't have to remove the battery or put the charger on the boat to charge it), the battery is heavy...but so is gas and a motor, pretty green, a darn lot cheaper than an outboard, can usually be used on lakes that prohibit any kind of gas powered engines, etc.