I wish I had removable arms, my current arms are skinny and girl like.

I saw this guy hitchhiking the other day and he had no arms , three eyes and one leg.
I pulled over and said "eye eye eye you look armless , hop in"

knot board said...

q. What to you call a deer with no eyes?
a. No idea

q. What do you call a deer with no eyes and removable legs?
a. Still no idea

q. a horny deer with no eyes and no legs???
a. Still no f@#%ing idea

hahahahaha....(snort)

Not sure what you mean by "removable arms".

They used to make booms with clip together extensions and tail pieces. Sometimes the front clipped on too. They were all ally though.

All the carbon booms I have seen have been 2 articulated pieces - the front bit and the back bit. Of these there are there are those with different types of extension fixings. Most use a single stainless pin that snaps into a hole.
Some booms are monocoque which gives the best stiffness to weight ratio (in theory because they minimise joints). Others have arms that are screw/glue fixed either side of the head. Most have monocoque tail pieces these days.

Chinook used to make a carbon boom with a nylon head. Those booms were super stiff but moved a bit at the front. This was a good thing because the whole thing was stiff in the best way and flexible in the best way. It would absorb a bit of shock without losing any sail tension.