I have one that I added to the starboard side. My son (12 yrs old) helped me. The install took about 1 1/2 to 2 hours. We mounted the pump to the rear seat pole and wired in a battery cut off switch. One issue that did come up was the mounting plate for the pole had to be swapped to another with more offset. the 2″ rise and 2″ back did not fit. I have a 6″ manual Slidemaster plate and needed a 2″ rise and 6″ back to fit. I have the same setup with 3 31 batteries and an oil tank. There is plenty of room to mount both pumps to the seat post or 1 to the post and the other to one of the rear compartment walls. Currently my boat is in storage as the water is solid up here or I would send you some pics.
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