I have a new 22' Xpress center console . It's an aluminum boat. The trolling motor is mounted using the rubber type expanders. The first time I used it, the rubber things loosened up and the mount started wobbling. I went to the truck, got some tools, and tightened the bolts up the best I could. I went back and tried to fish, and almost lost the trolling motor in the lake. I don't think there's any way that I can access underneath the deck to put some big washers and bolts on it. My dealer will fix it but don't see how it won't happen again using the rubber expanders. Just wondering if anyone else has had this problem and if anyone has any ideas?