Welcome fellow 386 owner.
I purchased my 2003 386 in March.
I added the Kato Marine Island Davits and radar pole in April.
I added the optional 6:1 tackle and cam cleats.
Kato recommends a support pole to avoid too much pull on the rail. You can see the port side support in front of the radar pole.
I installed the cross bar after this photo was taken.
Was very easy to measure with their directions, and the installation was straight forward.
On the radar pole, the forward support pole is mounted directly to the arch, using the 2 inch clamp I bought here on hunter owners.