Leisure furl makes mast stronger ?

[Brian Duff]

So in researching Leisure Furl's on behalf of a client ready to take this route - I found some intersting comments - this one really grabed me

"Chuck Poindexter (Sound Rigging, Essex, CT) has installed 14 Leisure Furl units. "I was surprised to learn when we had a naval architect do the calculations that the drive shaft actually strengthens the mast…by 11% to be exact. "

Remember that these units require a 1.25" cut in the fore and aft faces of the mast. I don't know...

THoughts ?