i'm new to this sport, and would like to know,,,boat on trailer, traveling, 8hp up or down....i've been lookin at others and noticed both, i have tried both,,when down it jumps around a lot and keeps jumping up to the next notch,,,,when up, it jumps around to the point of flipping the switch and falling down,,,,,i do have it straped to one side,,,,how do you strap it up or down,,,,or is there a lock that i'm missing.....