[Mr V]

In the past my team has bolted the webbing onto a spool. You do want to melt the hole through the webbing I've used the chuck end of the appropriate sized drill bit heated up with a propane torch. You will want to use a button head bolt and a big thick washer or plate just make sure that there are no sharp edges that will cut the webbing or wear through over time. I'd also recommend a single bolt and a larger washer/plate than two bolts side by side. You also want at least 1 1/2 wraps on the spool before the webbing is loaded. That way a lot of the force is carried by the webbing cinching on itself and not on the bolt and hole.