I do things the same way except that I don't keep real good track of the server when flying solo and just ask my scorekeepers to keep track of the server (of course this can become a problem when coaches have differences in their books since most solo worked matches are usually middle school and the table is inexpierenced), and buzz me for a wrong server. We have two MS leagues around here that automatically rotate the girls after five straight serves so your rotations don't always line-up either. In this case I do keep track of servers. I remember either patterns or something like that to remind me of the rotation. If 3 numbers in a row make up a telephone exchange for someone I know I remember that town or maybe even area code (If I see 2, 3, and 1 for example that is the area code for where I grew up in northern Michigan). Somethimes I remember pairs that get matched together (ex. 2,3, 7, 6, 11,12 then I have to remember 6 and 7 are backwards). Probably won't work for most but it works for me. Kinda turns working
VB into a brain teaser. after a few points it becomes easy to spot something that just doesn't look (or sound) right. I find that whenI keep track of the server I rely more on my card than when I don't or else I lose the server because the patterns take over and I'm starting from the same girl.