Personally, I think that "supporting" your motor by running a support up from your trailer is not a good idea. Got popular briefly in Oz, then most people realised that the boat never sits exactly still on the trailer, and you are sending that movement up onto the leg and putting more strain on your ram/s, rather than less. As for "saving " your transom, think of the stresses you are putting on it driving a boat through choppy seas at whatever speed. Simply supporting a motor with a little up and down movement means stuff all by comparison. As to the rams, unless you are trimmed hard in to the stops, the rams are also having to take that strain, huge amount of thrust and bashing on a rough day--compared to which, trailering is stuff all. Some people get very precious about this, we all have our opinions. People will claim their rams "failed" because they bounced too much on the transom--nothing to do with the flogging you gave it into that sou'easter? nah, couldn't be