No, but I've just unfitted a SailTainer in-boom reefing system on a 29ft yacht!
The SailTainer fitting basically consisted of replacing the mast fittings for boom and kicker, adding a mast fitting to bring the main halyard further from the mast, and adding a luff-groove type fitting to the sail groove on the mast.
You also need to route a furling line back to the cockpit; it travels down the kicker and then back.
In order for the furling to work, the boom angle must be carefully set, and this is achieved through a solid kicker. When it's all set up well, it's easy to raise and lower the sail single handed from the cockpit without using a winch.
I bought the boat with the SailTainer fitted, but also supplied with the original boom and a couple of slab-reefing mains. I'm returning to slab-reefing because I prefer the versatility of a non-fixed kicker, and also want to be able to use my (pre-roller-reefing) storm sails.
However, feel free to get in touch if you'd like a SailTainer, with all fittings and instructions, in good condition, with a lightly-used, fully battened main.