I'd like to use one but can't figure out how to or what to brace it against, dual sets of independent rollers on each side of the boat but nothing in the middle to brace a transom saver against, what do I do?
I would move the boat foward about 9 inches. The back set of rollers should be under the transom for the best support. Also your transducers should not reach the back set of rollers.
On My roller trailer I also have not found a transom saver that works for me. I think I will just have to make one.
if your transom can handle the full thrust of your engine pushing against it from the prop it can handle the engine hanging on it going down the road..... if you are still worried put a ratchet strap under the power head and hook it to the cleats.... to date I have thrown 3 transom savers in the garbage
I don't understand the responses above. If I understand correctly, your boat is likely positioned properly on the trailer.
But you don't have an easily accessed crossmember to attach the transom saver to.
Try one like this one. They work well for your situation.