Does anyone use mock scrapes if so any luck and can you give me the where,when,how,and what methods you use.

Yes i love mock scrapes. Here is what i do...
I buy one of these drippers/active scrape packages from cabelas yearly. All you do is tie it on a branch thats sticking out, just high enough for deer to smell it when streching there neck out, and clear the ground below of leaves. When the temp changes it slowly drips out a drop of urine here and there for a cupple weekes.
I have had many deer come in to check it, and infact the one i put up last week in my spot has a hoof mark right in it.

yeah i use mock scrapes alot, Im going to start one this weekend to be exact.

Make sure when you clear the leafs away to make the scrape area you use a stick and not your boot or hand. The stick also will help you stir up the soil and sometimes that can be just as big a factor as the pee you put in it.

I have made mock scrapes in the dark and deer have heard me do itand came over and made there mark in it as soon as i climb up the tree. Shot a buck a few years back who came in to my scape.