garymalmgren said..
I don't see how lowering them further will help, unless you lower them all the way, but then you'd have other problems of loose lines all over the cabin roof.
Lazyjacks don't need to be lowered.
If they are independent. both or either can be slackened off and pulled in towards the mast.
If they are secured to the mast low enough, there is almost nothing to get fouled as the main is raised.
Gary
I don't know if I like mine or not, my lazyjacks are my topping lift, so they're always on, under sail or at the dock.
To set the boom height you adjust the the lazyjack tie point on the sail bag closest to the mast, one per side.
I can undo one side to get the mainsail off and the boom is supported by the one lazyjack, but I drop both and have the boom on the cabintop so I've never really tested that theory.
If we're being supercompetitive I'll ease the lazyjacks in the light stuff to keep a nice shape in the main, but the boom lifts a few feet when the main gets hoisted, so they're slack enough for nearly all wind conditions without any interfering.
So its good for convenience and for not needing a topping lift, but a bit clumsy to adjust if you needed to do it lots.
When we hoist the main, we have the mainsheet and traveller eased and someone holding the back of the boom free-steering the lazyjacks clear of the battens going up.