I don’t have a longtail motor, but I do run a ProDrive on a 17′ flat bottom with a 55lb powerdrive on the bow. I’ve fished alot out of it, have had it for almost five years. The biggest issue with my setup is the boat has a totally flat, smooth bottom on it. That makes it like fishing out of a canoe or inntertube when it gets windy… And my boat is HEAVY, the 55lb thrust is barely adequite.. it’s as big as you can get 12v though… would really like to have an 80# or 101# but battery storage is an issue along with the extra weight.
Other than the few drawbacks really like the totally open floorplan, the fact you can go just about whereever you want, don’t have to worry about winterizing either. Just had mine out on Saturday, got home and covered it up, ready to go for the end of the week or next time it warms up. Also you can RIP thruogh thinner ice without worrying about your motor or aluminum prop.
All that said I’m kinda looking for a used 50hp OB that I could slap on for open water fishing, my ProDrive does have reverse but it’s a pain and slow, you just have to plan ahead a little.