I don't like the fact that i have to drill holes in my motor to mount a trolling plate.I have a 16.5 alumicraft V hull with a 75hp 4stroke.I took a piece of nylon rope and tied it from one of my front cleat to the other.Then go under the boat and measure 14in on both sides of the keel.At those marks i tied on two 30in drift socks.And yes you can troll with them inspite of what you heard,i've been doing it for 15yr.The reason for the duel socks is for better steering.I can go from .7 mph on up.They dont get in the way when you land a fish because they are all ways under the boat.The bags i use are Lindys from bp because they are thicker.This system has worked very well for me and if i hit a real windy day i can use them to slow down my drift when i jig for walleyes.