Thanks for the detailed explanation! I definitely need to find a method with more reliability. My LDs do tend to be quite long and elaborate once I do get lucid, but getting there is the hitch... these days little short of hours-long WBTBs seems to do the trick, and that is just not practical on a regular basis! SSILD and FILD gave great results at first but I got habituated to them almost immediately. EILD is just about the only thing I haven't tried at this point, so I think I'm going to shop around for one of these little vibrating alarms.