I tried it once and didn't like it. If I feel the need again I'll just use hairspray-easier to clean up.
I'm doing QAYG so ironing and pins were sufficient to my needs.
It does keep everything in place though. I just hate getting glue all over the place and don't like the outdoors unless the weather is nice or I'm gardening.
If I go full size again I might do it though. Nail a new tarp into the lawn, tape the backing on and go...