Interesting.  I haven't solo tripped yet, but when I do I'm sure my wife would like for me to be able to check in with her.  Sat phone is probably the best option, but very expensive last I checked.

I don't begrudge others who bring lots of electronics into the backcountry, as long as they don't interfere with me.  I've run into groups using 2-way radios up and down the lake who were very noisy and inconsiderate, but most people are generally polite.  My camera and headlamp are the only electronic device I bring on trips these days.  I used to bring a watch, but now I find I'm much happier without one, and adjust to the natural ebb and flow of things.  You can have your fish finders, bug zappers, GPS, weather radios, telescopes, iPods, or whatever else you want to carry in.  Just carry it out too  :)