Just wanna to share.
I been throught the same thing 6 months ago when transferring a 85HP motor. It was my first time and wasn't anticipating the a 85HP outboard could weight 250lb. My motor mount was put together with framing nail only. Whata bad idea. It may have work ok for a kicker motor, but not for a 85HP outboard.
My friend and I mounted the motor on to the motor stand and lifted on to the back of his pickup. Drive 10 miles back to my house. Unloaded the entire load off the pickup and into my garage. Just as we push the motor into the corner and turn around congratulate each other for a job well done. The motor horizontal piece fall off the riser. I took a quick step to catch the motor and screaming for help to hold the 250lb motor up right.
After we finally lay the motor on the floor, I reinforce the the horizontal piece with 6 deck screws, 10 framing name and two 3/8" carriage bolt. Oh also up the 2x4 to 2x8.
That was a close one. Could have lost the entire load on our way back.