I've got a Big Game Boss XL hang on that I sat in for the first time today. I'm pretty sure its the biggest hang on Big Game makes. How do you guys hunt out of these comfortably? There's 3" on both sides of my feet! I couldn't imagine a smaller one...
Take breaks and stand up for a few minutes at a time. Measure the cushion and cut out a square of some kind of supportive foam to add to the seat.
You can buy a gel/foam seat cushion. They work really well. Here is a link to some on ebay. They come in different sizes. Medline Gel Foam Wheelchair Seat Pressure Cushion 18" on eBay! I hope this helps!