I had a pleasant surprise this morning. Yesterday I met with my genius sewing-lady friend because I had bought some additional 1 1/2 inch elastic to make a new chin strap (extra tight this time). When I looked at my data in SleepyHead this morning I had my first ever night with zero leaks! Yay!
I should also add that my friend introduced me to a new product that I didn't know existed - diaper pins. I had been hand sewing my custom home-made chin straps because regular safety pins sometimes come apart in the middle of the night. The diaper pins are much more secure. I like them so much that I found a Chinese place on Amazon that offered a pack of 50 for $3.57 with free shipping and bought them.
I should also mention that I found the 1 1/2 inch elastic in a fabric store where it cost me $1 a yard, although my friend told me that $1 a yard is an excellent price. I had previously bought several yards of 3/4 inch elastic for the back straps at $0.75 a yard. I'd like to point out to those who are buying commercial chin straps from a DME or online supplier for $15 to $40 or so that my chin straps cost me less than a buck apiece. They last only a couple months before the elastic loses too much of its stretchiness, but who cares?