Thanks for that but need to join to see any info. Not sure they have what I need unless someone knows different...Are you aware of the Snapdragon Mirage and Invaders Association lots of very good technical information there.
Thanks for the post. This is my first bigger boat - previously sailing dinghies and currently have a Frolic 18' all with a fixed boom. Just wondered if I needed a downhaul of some description or whether the kicker is enough...I thought most boats were like that certainly the ones I have owned/sailed were.
My Snapdragon 24 is similar, but the slot for fitting the sail is above the boom. It looks as though you'd have to remove the boom to get the mainsail sliders into the mast slot. Is that correct?
That little knurled nut looks as though it's an adjustable stopper that would keep the boom from dropping too far and, with the main up, the kicking strap would keep it from rising, though I did modify my setup to have a stopper each side of the boom
You're right, I'll have to remove the boom to fit the sail. Wasn't sure if that stopper was for above or below the boom. Could get another I suppose for fitting above. The sail doesn't seem to have sliders either but I have pictures from the previous owner with the sail down and wrapped in a cover on the boom ???
3) When you raise the mainsail pull the halyard up until the head of the main is as far as it will go,
Your boom was originally designed for roller- reefing and, like many, has been converted to slab reefing.Have recently bought the above boat but am a little puzzled by the boom set up. It slides up and down in the sail track with no fixed position. I’ve not seen or used this arrangement before. Any help on how to rig it correctly please?
See the pic in the public link: TIA
Mast

Your boom was originally designed for roller- reefing and, like many, has been converted to slab reefing.
Mine was also a roller-reefing boom converted and the gooseneck was able to move up and down about 15-18", on an external track, as most roller-reefing goosenecks were.
I kept this arrangement because I like it because
1. I don't need to use a winch to hoist the main. I haul it up to the stop at the top of the track by hand and then use a downhaul tackle to pull the gooseneck down and so tension the luff.
2. If I ever need to set the sail in a hurry in a confined area I can quickly haul up the sail and leave the downhaul alone until I am in open water and have time to tension it.
You will need to fit a simple downhaul tackle to the gooseneck...