I am curious about metal bottom sleds on concrete. More specifically, as I will be using it in a resedential driveway (blacktop,) am I likely to scratch the S#@!T out of the driveway, aesthetically speaking?
I'm inclined to go the "tire with a wooden shelf" route for this reason, but if someone has experience that the driveway is relatively unscathed I would just as soon go with something like this:
http://www.grabcart.com/product/spor...-Training-Sled
or this:
http://www.newyorkbarbells.com/1160.html
TIA