Re: motor tilt for launch
Here is my take.
For launch...
definately up. The motor will not kick up if you hit something. Will definately hook the wrong way.
For retrieval...
Can be down. However, no power loading. Motor not running or running very slow, the motor will kick up. High speed will potentially result in damage to prop or skeg or both. However, if the boat is sliding backward, you do have a risk.
Obviously, up is best. In my old boat i had no power tilt/trim and I always pulled the motor up before I retrieved and kept it up until I had it back in the water. (except for running it on the muffs.)
TerryMSU