"As in unfore seen issues?? or to turn props in or out ?? as for prop rotation not sure . Is there something I am missing or forgeting??"
As in running a reverse rotation engine for Arnesons or making other arrangments to achieve opposite rotating props."
You might want to call John Ingle of Ingle Marine in Clearwater as to the handling aspects of the boat. In the early 80's we put surface drives on several boats for Jerry Burton, Cigarette, and Craig Barrie. They were a 38' Cigarette, 38' Scarab, and I believe one of Burton's Excaliburs.
The Cigarette would not trim and was therefore not acceptable, the Scarab w/Kaamas was a handful when coming off plane and would not steer very well (flipped it once) and I'm not sure of the performance of the Excalibur.
We did put Arneson on a 41' Cigarette with diesel Cats that ran pretty good and eliminated the problem of breaking drives.
Handling problems around the dock were overcome with some patience and experience.