Rather than post in Murphys thread and answer his specific question I thought I would start a thread that could be used for people looking to mount amp's in there boat. It seems like a pretty common question here. I thought I would share my way of doing it and the reason I do it this way. Im hopeing you can share the way you did your's so people can get some Idea's and use this thread in the future.
Most boats have a curved or concave gunnal. This make's mounting a traditional Amp board or Rack tricky. It's hard to get a large amp board to stick to a curved surface like your gunnal. You don't need to make a rack or board to mount your amp's.
I make 2 mounting point's or block's one for the front of the amp and one for the back. These block's glue to the bare fiberglass using your faverote glue. These block's have a stud or bolt comming off of them. These blocks are made of MDF. I coverd them in epoxy and painted them.
Here is a pick of a amp hanging on a block thats mounted. The cut away carpet is for another mounting block that hasen't been put up yet. You can see the 2nd mounting block down the line with a stud for another amp waiting to be mounted.
You have to make a metal strap that bolts to the amp's mounting feet. This metal strap is what attaches to the mounting block. Like this.
This allows you to hang or mount your amps up in aera's you might not be able to get to.
Here is another look at the strap or mounting point.
Here is that I did to mount the distrbution blocks.
IMO this way of mounting amp's has a few advantages. It allows you to mount to a curved surface. This helps when you have long flat amp's. The Block also work to stand the amp off the mounting surface. This help's the amp shed heet, because the amp is not mounted to a flat surface like a amp board air can flow around and underneath the amp.
I uderstand this way of mounting amp's is not for everyone there is may way's to skin a cat. Just wanted to share one way of doing it mabey it will work for you. Let's see your amp rack and if you have any tip's how you did it or why you did it that way it would be great.