I bought some of these stainless tiedowns and found them to be pretty much perfect for the cargo area of the Maule. They have a 5/16" mounting hole to fit the AN5 in all the seatbelt and tiedown locations, and the other side fits a ratchet strap or similar. At $12 for 10 of them with free shipping, they really can't be beat.
https://a.co/d/b0KmjMK
![Image](https://backcountrypilot.org/images/photos/7069/6670/82f2be8870460c70a3a2f78d.jpg)