most small motors have a tension bolt where the motor pivots.Sometimes it is a band that tightens or a bolt with a nylon button under it to apply the tension.<br /> If all else fails maybe a simple loop of rope to the handle just to stop it from turning as you troll.Most turn in only one direction anyway.
I know smaller motors of years back had that screw. Don't know if the 60 is "too big" for it or not.<br /><br />What about a couple of bungie cords hooked around cleats or tansom eye bolts and connected to the lift handle in the front? If it doesn't have a lift handle it will have a bracket that would otherwise connect to remote steering. Use that.<br /><br />Mark