Posts: 3480
Location: Elk River, Minnesota | Hiya,
Much of this can be somewhat dependent on boat manufacturer as well, so it is something to consider when selecting a transom support.
If you have an aluminum boat, most (if my memory serves me correctly) will recommend using a transom support that ties directly to the trailer as this will stop any sort of flex on the transom itself when boat is being towed. Some will argue this doesn't happen, and some will. The boats are built strong enough to withstand a good bouncing (just watch your motor sometime as you travel down the lake in waves). The big thing is, when you tilt the motor though, the lower unit is now away from the transom and that enhances the amount of bounce the motor can have on the road. Taking that vibration and stabilizing it at the trailer keeps it from happening.
On many fiberglass boats, the transoms are built with extensive support from the transom forward, but still benefit from the same stabilization. Many of these, though, one can get away with the wedge-style as the transom area is much much smaller for the main motor, so flexing is reduced significantly (a way to think about it....take a 2" x 10" x 7 ft and stand on it between two supports at the end, then support it in the middle separated by about 2 feet.)
No matter what you choose to use, stabilizing is a good thing...anything that locks the tilted lower unit down is better than nothing at all.
If you are in the twin cities area, I have a trailer stabilizer I no longer need. It goes over a back roller, then up to the lower unit. It's yours if you want it.... PM if interested.
Steve
Edited by VMS 1/28/2020 7:15 AM
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