Not double, but it does add some strength. A good fabric calculator is on the DreamHammock.com site.

If you layer the fabric with say two table cloths would it double the weight limit?

That’s right where mine ripped. I also used the amsteel, and it just puts too much pressure on the gathered end. Would be interested to see how you reinforced it. I will say that earlier in the day they were falling from the top hammock into the bottom hammock in a double hang. They only weigh 75 lbs though. They got a lesson. It ripped though while my 11 yr old was trying to sleep in it. weird…

Mine ripped at the larks head or whipping point almost immediately. Pretty sure the 7/64 amsteel cut through the fabric. I have since added a more durable layer or sheath in that area and am using a prussic rather than a larks head to spread the pressure. Going on 8 mos. w/ no problems.
Also there is nothing a scout troop can/will not destroy. I think your main problem might be resilience of youth.

Bummer to read about the declining quality, considering that each tablecloth costs $10 and 3.5 yards of ripstop from diygearsupply costs as little as $12 (1.1 oz seconds in royal blue today). I’ve never had trouble with diygearsupply fabric.

Thanks for the update on the fabric. I wonder if their source has changed.

One thing I would caution about is that the fabric from the tablecloths suggested was not very durable. More than half of out hammocks ripped on the first use. Some down the middle, most by the knot on the end. The fabric felt very cheap, and I guess it ended up being so.

Not sure that I can recommend doing this project with the source provided, but the concept, and the process are great. Just need to find better material.