It's probably been discussed on here before, but I am looking to get a 10x12' tarp from Dan that I plan on using not only on BWCA trips, but also car camping and when I go backpacking on rainy weekend loops (may even ditch my tent and just use the tarp on these trips?) Is there a major weight difference between the 1.1oz tarps and the 1.9 oz tarps?? And how do you set these up over a fire pit without melting holes in the tarp?

The weight difference is about 8 ounces.

As to the fire question, be very careful. If you keep the fire very small and you can do it.

Here is the page on CCS that gives the comparative weights of the tarps.

You can set it up over the fire but as said it is key to keep the fire low. I suggest the 1.1 if you are gonna also use for backpacking. There is about a pound of difference between the fabrics.

We normally set the tarp up away from the fire and use it as a hang out/keep gear dry. Depending on how hard its raining, this is when we cook with the stove vs over the fire.

If you want to use a tarp over the fire, I would get a cheaper tarp to use first. You can test out what works and what doesnt and then use the CCS after your trial and error.

I would say get a bigger tarp as well. I have the 1.1 oz size 16' by 10'. Initially I was gonna get a smaller one, but was talked into buying a bigger one. Glad I did. It only weighs 4 ounces more than 10 by 12. I have found 4 ppl get fit comfortably under the 16 by 10.