Never made them before but wanted to try. got a slab (which in size equals to about two slabs of pork ribs) and made it on the grill about the same way I make pork ribs. The result was very disappointing though: the meat was very tasty, but after about 4 hours of cooking, there was hardly any there. There was a lot of fat. Perhaps I need to look up a better recipe, or learn how to pick out nicer racks...and perhaps I will never make them again.
Waste of time and money...even though they were only $1.99/lb - but most of that weight was bones and fat.
On the plus side I made Honey mustard drumsticks which were awesome.