Weiss (described as a 20 year veteran of commercial aviation earlier in the article) agreed that dumping fuel would be essential and said that a pilot would need significant physical strength help power the plane off the runway in ample time.
"You use every inch of that runway," Weiss said. "You must have very, very, very little fuel, just enough to get to Branson. It's not something that you have to be a bodybuilder to do, but it's challenging."

What?