Definitely use the search button! Short answer - NOT needed, generally these will tow just fine with the engine all the way down - which is BEST.
But, if your trailer is really low and requires the engine to be tilted, then YES, use a Transom Saver to protect the engine.
Great info on Transom Saver vs Hydraulic Saver:
Go to toterite.com and order you one of those. Gives you ground clearance and keeps the motor from moving about. Installs and removes in about 30 seconds. We trailer full-time and have used one of these since day 1. Dealer sells a zillion of them. Highly recommended. Our motor is too low on the trailer when fully down to not use one. The MotorMate is another similar option.