Ya I was thinking about what to add about FSS, A few quick pointers (if I forget anything throw it in here other coaches)
On the FSS page (where it shows potential) every 12 hours (3 am / 3 pm i believe central time) it updates and tells where the recruit stands with any and all schools and how big a priority he is for them.
Really I think the potential is kinda obvious, don't get guys that are low in a key rating that isn't near maxed out. (There are obviously exceptions that you will find).
Again I usually ignore positions given by wis... I will show 2 examples quick that I have used as PFs this year.