Flash cards are definitely the way to go if you're trying to memorise them. Having the valid and invalid forms on index cards, and drilling them together helped me, that way I had to actually think about it rather than just look at it.
@cliffiness said:
Will the admission officers actually spend the time ... have phone numbers of their admission offices listed. I actually emailed ... it all depends on the admission office.
Depending on where you are in the country and if there's a certain school you are geared toward, a FEB LSAT for fall admission still might be workable; you will have to email the schools you have in mind.