M_Boats: reefing

Hello M17 sailors, The main on my 2004 M17 came with a single set of reef points, but I am not shy about have a second set installed if they are likely to come in handy. Has anyone out there needed to double reef, with or without a storm jib? As always, I prefer to learn from the experiences of others, rather than finding out the hard way. Thanks in advance for any comments. Tom Jenkins M17 Scintilla