Yeah fleece saddles are very comfy but like was stated earlier since your using a rch there’s no need for the webbing or even sewing for that matter. There’s a thread on here (ultralight fleece saddle or something) with a very good video showing how it’s done. For 15-20$ and 15-20 minutes of fab you can make 3 or 4 fleece saddles. Very comfy, vey lite, very packable. There’s always one stuffed in my pack even when the plan is to use something else. Found the thread. DaveT1963 made the video. Page 9of the thread.
https://saddlehunter.com/community/index.php?threads/the-ultimate-ultralight-saddle.2358/page-9
My first attempt was a fleece saddle made from a $4.99 fleece blanket that I cut in halves. I put a piece foam pad between the 2 layers to help with transition from RCH to saddle. The foam eliminated using both hand to spread out fleece saddle. The piece of foam doesn't make it as packable. The saddle is very comfortable.
I was reading about the many sewing projects on this website and decided to make the fleece sit drag out of the other half of the fleece blanket. My wife's great grandmother's Singer 66-18 sewing machine had been stored in our garage forever, so i pulled it out, cleaned it inside and out, and oiled it up. Bought thread, needles, and learned all I could on-line about sewing. There is a lot to getting a good thread pattern, especially when you go to heavier thread (bobbin tension issues). YouTube has some good tutorials on using these old machines.
My first two projects were the fleece sit drag and a DIY RCH. I had bought a RCH from amazon, but it has padding around the back and legs that make it a little bulky. The DIY RCH was an attempt to make a lighter and more packable harness. I made the DIY RCH from several deer stand safety harnesses (reason for the multi-colors). The DIY RCH definitely isn't as comfortable as the store brand. I may stick to the store brand.