My old heavy mahogany boom was getting a little punky in a few places so I had to put in a couple of scarfs this winter. That being done and back on the boat, I found a used boom at 2nd Wave in Seattle
that is a perfect replacement for mine.
A beautiful, straight, clear, varnished Spruce spar with old Merriman roller reefing hard ware on it in perfect shape, exactly the right length of 16'8" for $300!! I couldn't buy the wood & glue for that!
Needless to say, I am a happy camper!
But, I've never had roller reefing or sailed on any boat that had it.
Are there any tricks I should know? Maybe there is an old timer out there who remembers how these things work. Looks basic enough - put in handle, slack main halyard