I have a third battery in my port compartment. I removed the panel that the shower goes through and coiled the hose up in the funny area on the side. The controls aren't a issue the bag goes up to the bottom of it. I moved my empty pump to the front of the compartment for better empty times but doing so allows the bag to not fill completely du to water back feeding through the empty hose. I fill the surf side rear, 1180 lb center, original rear bag on the floor next to the cup holders and put a old round fat sat (500ish) on top of it from the back of the drivers seat onto the rear bench seat. This puts it down to about 3 inch below the rub rail.
Video of my wife
https://www.youtube.com/watch?v=FgvT...e_gdata_player
2003 Supra Launch 22SSV
1986 Ski Natique 2001