I've read some of you guys and gals posting about divots and using that as a gauge if you are swinging correctly? Would appreciate some more info on that, as I am only practising on the driving range currently, mainly with a 7 iron.

I've seen a lot of people hitting the mat when they do their practice swings. Would that have anything to do with the divots? With my 7 iron on the range I try not to hit the mat/floor at all, so is that wrong afterall?