No, it wasn't spam. Here's the answer sent directly to me. Of course
the new sail costs more than Scotty's whole boat, so he's quite upset
and continues his trolling.

Here's the reply...and thanks! My new sail will be built over the
holidays.

Robert, the AKS is an older series bi-directional cloth with aramid
scrom. Rolling it is not a problem. Hard crimps of the aramid
fibers can be a problem whether it is rolled or flaked. Using a sewn
UV cover adds weight ( to the edges ) of the sail. A sewn on UV cover
allows water to get into the "rolls". The mylar membrane does not
breathe so any water retained in the rolls does not dry out. There
isn't enough of abrasion to worry about rolling the sail, but if you
are concerned abrasion can be reduced further by using Sailkote or
Nano products. If that is not enough get the version with tafetta. If
you are going to leave it up, get a zip UV cover which you can use with
any of your headsails if you want to leave them up. A wet sail will
still need to be dried a bit to lessen the mildew problem. The
aramid sail would be the better choice. You will notice that the leach
of your Pentax moves in and out with the puffs. Aramid will reduce
most of that and more if you use low stretch sheets as well.

You have the same issues with the Pentax sail. The fiber does not
matter, it's the construction. You also have weight issues because of
the sewn on UV cover. As that cover ages it will be able absorb more
moisture and get even heavier. Aramid fibers will retain better shape
as the sail loads up, the Pentax will stretch.