Lake Powell has some serious discounts on houseboats this summer and I'm seriously thinking about a trip there summer and pulling my boat there. Here's the dilemma, I'm in Dallas and the trip would be about 1000 miles.

Summer of 2011 I pulled the boat to Lake Ouachita in Arkansas which was about 320 miles with no problems or issues.
(actually hit a submerged 'rock bar' in the lake and did 7k in damage to the boat)

What's the furthest anybody has pulled their boat?