Looks like a Kiekheafer Super Ten on the back of that little rig. Used to have one of those back in the 70's on a boat about that size. The lower unit was direct drive, no reverse or neutral. Once you strarted the motor you were moving. I used to drive mine in a catcher stance to keep my knees from getting hammered in the chop.
Neat build, sure brings back a lot of memories.
Pat.
P.S. It went like a bat out of hell.