Hey jt09-- I'm not sure what you mean by "across from Devil's?" Devil's is on Lake Travis, right there across from C&C, and is still the main party place on Travis.
Dinosaur Cove is on Lake Austin, across from Hula Hut, in Westlake. It probably has other names as well. Over the past couple of years, it has grown in popularity as the party cove on Lake Austin. Several years back,the party cove on Lake Austin was primarily Bull Creek, which is very close to the Pennybacker Bridge and the 360 boat ramp.
I'm not sure why it switched, although Dinosaur has deeper water, than Bull Creek, and is close to the marinas at Oyster Landing, so perhaps that has fueled the change.
We used to go to Dinosaur any time we wanted a litte more privacy from the party. Nowadays, we do the opposite and head to Bull Creek if we get tired of the dueling wakeboard stereos.