Trolling motor worked fine yesterday, but today it was as dead as it could be. The direction indicator worked and turned the motor in all directions, but the blade would not engage. When I turn the blade by hand, it appears to be a little stiff, where before you could spin it freely. I have to admit that I did get some line hung in it yesterday, but I thought I got it all out and it did work afterward. It is getting voltage because it will change direction fine, but won't run. Spoiled my whole day on the lake. Any ideas what could be wrong, or do you think I have to take it to a mechanic? BTW the water temp at Bull Shoals was up nearly 2 degrees from yesterday from 45 to 46.8, so I think another week of these temps and the action should pick up on Bull Shoals and other deep water lakes.