Today my wife and I put in the X2 Size 31 battery from Battery+. At 75 lbs. that is a little too much battery for this 71 year old to get onto the back deck let alone lowered into the bay with about a 1/2 inch of wiggle room on each side. So I used a 4:1 hoist and it worked like a charm. My wife guided the battery in while I had hoist duty.
The hoist is one that someone on this board (THANK YOU!) recommended and I pass along the the link for anyone who might be interested: https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1. If you are squeezed for space, I also recommend the T-H Marine stainless steel buckled narrow battery tray from TW: https://www.tacklewarehouse.com/T-H_...e-THBATHO.html