I would think that once you have amps set, you never touch them again, at least I haven't unless changing something within the components of the system.

I guess I can understand the bling factor, as I had big systems in my past imports and a couple of mini trucks back in the day, but I guess I see a boat as more a family and close friend thing and I really don't try to show them the bling, unlike cars where you might go to a show and open it up for all to see.
not too often(as a matter of fact, never) have I had someone roll up to me on the lake and want to start talking stereo installs