Shamrock needs to retire and get out of the sport.
He can't coach worth a shit either. Just look at Ultimate Fighter 3.
Its like Gracie. If you want to learn Jui Jitsu then he would be a great coach, but not a great MMA coach. He is one dimentional.
Look at Tito, Chuck, Hughes, Franklin, etc They have all sorts of tricks to pull out in a fight. They are the new age of MMA fighters.