Bought the Lowrance and now I'm faced with trying to mount this brick, it weighs about 3lbs. This is the first time I've gone down this road. Figure if it doesn't work out I'll just throw it in the car. Anyway, since it is so heavy I am thinking the BMW base may not be heavy duty enough. I'm not real keen on the shelf idea as I don't like drilling holes and mounting braces and the like. So any suggestions would be appreciated.