Get the frabill predator cover. It fits much better,won’t rip out as it does not fit as tight and has a zipper to access your gear on top. Worth the money.

Wal-Mart, Menards,etc. You will find them in the fitness section at Wal-Mart and in the flooring section at Menards. I hooked them together depending on the size that I need and then duct tape them together at the seams so they don’t come apart. Foam mats that roll up also work. They are found in the fitness section at Wal Mart also. Easy to cut with a sharp utility knife to make the size you need.

I have a Otter Pro Lodge and it is great to sleep in. I put down those interlocking foam mats on the ice and use a cot. I run my little buddy on low with a -30 bag and usually end up shutting off the heater. Have a heater/cooker also hooked up so I can cook. Nice to wake up and fish and drink a cup of coffee first thing in the morning.