My farther in law has a plate with the center rod for the pedstal mount on the boat. The plate is made from 1/4″ aluminum plate and what appears to be the top half of 2 seat mount poles cut to maybe 4 inch or so with the plastic bushing in it. When he is spider rigging he puts it in . When not well it hanging up in the shed. This leaves the center mount to use in the center of the deck when hes not spider rigging. Not sure if he bought this apparatus or had it made. But looks simple enough to fabricate.2013 PANTERA 2MERCURY 200 PRO XSMINNKOTA 80LB FORTREX25 fury