I had a Mariner for a few years.
Used mostly to
single hand on a lake.
Good boat to learn on.
I'd add a reef point to the main.
Mine had a
furler which made life a bit simpler but really not needed.
D&R
Marine in MA has
parts
There is also a dedicated group of Mariner owners
at usmariner.org that is gonna be a big help to you.
Lots of good how to's and
maintenance &
repair info.
You should also add screens to cover the
cockpit drains
they are a pain in the butt to clear if they get stuffed
by leaves and such. I used a bathroom plunger.
PM me if you need specific info
Cheers
Neil