I have a 38 foot boat with in mast furling and would never consider anything else after cruising with it for the last six years. It's never jammed even with the old Baggie main. To makeup for lost
sail area because of lack of roach the mast is a bit taller which to me makes the boat look better. Sail shape is not a problem once you learn how to control it. I can be sailing with it in under a minute and putting it away takes the same amount of time (I love that!) When everyone else is reaching around with just their jib
because they don't want to deal with their main, we always have ours out.
What sold me on the stowaway was Phil Weld. He raced Moxie in the Ostar (? England
to Newport) when he was quite old and won. He told me after winning that all the credit went to the stowaway. When it got a little windy he would roll the main in and right back out when the wind
moderated. No five minute rule
. No pre-preparing for squalls. He credited it with not tiring him out so he could use all his energy to go fast. Great sailor!