Re: Outboard up or down when traveling
I prefer down, and have had a couple of boats that I could do that with, but in most cases you have to tilt the motor. This is true for all the reasons previously stated.
The boats that I trailered with motors down both involved 20" transoms, one of which was cut down to about 18", with twin engine installations that had 15" shaft lengths. Because the boats were V type hulls this setup worked fine in the water and offered an advantage in terms of draft, something that can be very useful where I live. It also allowed trailering with the engines down, without problems - I never once hit pavement with them, even on curbs, etc.