I broke down and ordered an Ultrex and I have been doing prep work on the boat and reading installation instructions online. I do have a question when it comes to the mounting process. Other boats that I have owned, including the motor I removed from this one, have had either isolator type bolts or at least rubber washers between the base of the motor and the mounting surface. The Ultrex mounting instructions do not show any provisions for doing so. I was wondering what others here have done when installing a new trolling motor on an aluminum boat. Any input would be appreciated. Thank you for your time.