Spanking GF

My bf and I had a girl referred to us by a past gf, meet us last night. She was told that we were the best, kinkiest, sexiest, most experienced and would do anything sexually . She has a severe spanking fetish and wanted us to do our worst.
 She instructed us to whip and spank her as hard as we could, and with as many different things we could find. She wanted us to spank her non stop for 30 mins. She wanted her ass red, marked, blistered and bruised. She told us we could fuck her for 30 mins afterwards. The other stipulation was that she wanted to be tied, so she couldn't defend the spankings.
 She came over about 9 last night. She was 5'6, amazing body and HOT! She told us to start immediately. We took her clothes off, except her light pink thong(we love thongs and lingerie). We had her stand at the end of our dining room table, bend over it, and lay her upper body down on the table. We spread her legs and tied each ankle to a leg of the table, so her legs were spread widely apart. We then tied her hands together, extended her arms in front of her, and tied them to the front of the table. We then had to gag her, so our downstairs neighbors wouldn't hear her. We decided on a big, red ball gag. A ball gag is good because it fills the mouth, muffles sounds, makes you drool and you have something to bite down on when in pain. Now, she was ready!!