I've been running two of these Sumo's on my Sailworks Revolution's for the last two years and had no problems whatsoever with them. The constant curve is a perfect match for the Revo's with 91% carbon and a range size from 370/400/430/460mm. Slightly heavier than other masts but worth it in my opinion when your getting drilled after a big wipeout.
If your looking for a mast, give one of these babies a go. Contact Chris at Windsurf Systems on 0412 257 922.
if they are good as the old 91 % no limits SKINNY ..they are little rippers ....for EZZY sails too..
You're not wrong. A top quality mast, built to last and made in the USA. I run the 370, 400 and 430 sumo's on my wave, race and freeride sails. I've had no problems with them whatsoever, and over the last three seasons of sailing in all weather conditions they have shown great durability.
I also got mine from Windsurf Systems who were very knowagable and helpful.