Jeff20919 and others. I sort of went through this last fall, so, FYI, the following: I have a 2003 Hunter 306 with the in-mast Selden main furling, and last fall, after looking at various options, decided on the Mast Mate...I thought that I could use the small "spare luff groove" for holding the ladder to the mast, and then hoist it and secure with the spare main halyard (but with an upgraded halyard line. (It's now used as a 'main topping lift' which is sort of unneeded with the boom vang, though I've used it to hoist my decorative signal flags on Commissioning Day.) Anyway, the Selden specs for the spare luff groove (used with a storm trysail or emergency main, according to Selden) says it is supposed to have a 7.2 mm inner diameter, and the smallest Bainbridge slugs are slightly larger than that. (They advertise item PA016S/2 as 9/32", but they lie. It's the same size as their PA017/2 at about 5/16" and they only say, well, it's our smallest sail slug and 'about' that size, and to me "tough luck.") I thought I had a solution using #6 luff tape (which fits fine!), but after buying 35' for about $70 from a local sail loft, I called to arrange to send it to Gary at Mast Mate (you have to provide your own sail slugs for them to sew on the Mast Mate), he then informed me that his contractor would not sew to a piece of luff tape, but only to sail slugs. He then offered me the mast mate (bare) to have my local yard sew it on the luff tape, but then I'm at (or well over) the price of an ATN climber! Mast Mate's suggestion was to just buy the Bainridge slugs and grind them down myself. Probably pretty easy (if I had a grinding wheel or rotary bench sander), but they say I need to send them 25 slugs (and packaged 2/pack from Bainbridge at about $11/pair = an additional $132!!!) Not a good deal here. BOTTOM LINE: I'm still looking for a way up the mast (by myself....but not on a bosun's chair). I have an unused 32' piece of luff tape. And I still think it's a VERY elegant way up the mast - to be able to use that spare luff groove (in the newer Selden self furling masts) and the spare main halyard with a Mast Mate. I'm just not there yet. (Actually, I get a bit upset every time I think of it, like now. I was led to believe, e-mailing Gary at Mast Mate, that they would take the luff tape as an option to the sail slugsa that wouldn't fit and were expensive and an effort to modify, but only after I purchased the luff tape and had it ready to be sent to them with a $300 check for the Mast Mate, they said they could not do it for me. IF THERE IS INTEREST IN THIS IDEA...AND IT'S MORE THAN ONE POTENTIAL LOST SALE...POSSIBLY MAST MATE WOULD BE MORE AMENABLE TO SERVICING POTENTIAL HUNTER/SELDEN CUSTOMERS.) If there is any interest expressed in replies to this thread, I may try to get over being POed, re-address the issue and contact Mast Mate and see if they will reconsider. ???