Ok, I think I figured out the image posting, here:
As you can see, the current owner of the boat has set-up a bimini (the blue one, not very clearly visible since a brown one is in the background from the next boat). The bimini traps the boom, which means it can't be used. And, it's too low, one keeps banging one's head on it.
Lifting it at a 30 degree angle doesn't work.
That's why I'm considering to move it higher, so that it's out of the way, but still I could open up the bimini and use the boom to pick up an item on the deck and drop it in the water.
Thoughts?