[davolson]

I need to mount some rocket launchers to my 1994 3100 open. Also possibly run some extra light wires, etc. Before I go drilling and digging around in there can someone
tell me if the inside of the arch is hollow, or foam filled with a single access for radar cables etc? How to run bolts/ screws through it without hitting or cutting any wires?
Any thoughts or knowledge of the interior structure would be appreciated. Thanks

[bilgerat]

I have a 1988 31 open and have recently installed some rod holders on the arch. It looks to me that the inside of the arch is hollow. Might want to check how it's mounted and take into consideration when deciding how many rods to run off of it.

[jeffnt]

I have a 94 31' mine is hollow with radar ,rocket launchers,lights,gps installed.