I just got a tri hull with an 85hp and need to set up for trolling.
Good deal! I love a tri hull for fishing!!
I tried a trolling plate t wind.with the 60hp and it did work great at slowing my boat down-gas mileage sucks!
At .5mph I used just as much gas as I do at 12 mph.
I went with a 55lb Minn Kota stern mount motor with two group 27 Costco deep cycle batteries.
Works great-I almost always just use the one battery-about 12 to 15 miles with out a wind.
Bow mounted motor would be great but much more money.