Look closely at the trailer just under the motor. Some of the newer trailers do not have rollers in the center. Most standard transom savers are dsigned to fit around a rear roller. It's hard find a way to attach it to the trailer without the roller. I think there are a few out there designed to have a mount added to the rear brace of the trailer to "slot" the transom saver if it's just a cross bar. Also, the motor toter is a good alternate if your trailer can't take a standard transom saver.