Re: towing with motor up
There are several factors that dictate whether or not a transom saver is needed. Note the key word "transom". First, if you have clearance to tow with the motor or outdrive down, by all means do it. The forces on the "transom" are therefore vertical and less damaging. If you don't have clearance, even if the engine or outdrive is tilted up and locked with a tilt locking device or just the hydraulics of the trim mechansim, the weight hanging out the back of the boat now becomes a big lever which creates a great deal more flexing of the transom. Using a true transom saver (motor or outdrive-to-trailer frame) negates those forces as the transom, engine/outdrive, and trailer are physically "one unit". Therefore nothing can flex. Tilt lock devices do nothing to prevent transom damage although they do protect the tilt/trim hydraulics. Last, what really determines whether you need a transom saver or not is the type of roads you travel and the speeds you travel at. Down south, a road is made by creating a flat surface, paving it, its smooth and it lasts forever. Up north where frost heaving is a problem on even the best roads, a trailer boat takes a gosh awful beating. Secondary roads (paved or not) cause even more shaking. If one does a lot of trailering up north, transom savers are essential and are very widely used.