Not anymore! My 16.2 gelding gets so high I almost get a nose bleed! Luckily he only makes 1 or 2 of these big leaps so he hasn't thrown be yet. He just does it to be exuberant; usually when we're galloping up a hill.
I have found that most TBs like to rear. I think I prefer bucking.
Mary Eaton
TB lover and ride manager of the 7E BarnBurner