dougies, what you are saying is bull****, pure and simple.

But that doesn't answer the earler question... the differential pressure
across the
main is going to interfere with (and suppress) the tip vortex from the jib.
Got it
so far? That means that energy lost through the jib head tip vortex will be
less.

Now, is that energy gain for a frac rig greater or less than the gain a
masthead
rig gets from not having the jib head tip vortex disrupting flow across the
main?

Folks, I think Jax *might* begin to actually grasp the question this time....
any
bets?

Fresh Breezes- Doug King