The issue is that vera doesn't detect she's away.
I think I found a solution:
for the inner fence I will do:
1 - on entry - change multi switch on
2 - on exit - start rapid update for 3M
for the outer fence I will do:
1 - on entry - start rapid update for 3M
2 - on exit - change multi switch off
What do you say?
Just so you know you can also have your small fence turn off switch along with the outter, you can also have a rapid update start at the same time on either...... But i dont think a 3min rapid update is necessary on exit. If it detects the inner fence leaving why bother with starting a rapid update, just turn off the switch and call it done.
If when u leave its not switching, your fenfe might be to small and your cell hasn't got 3g yet as its switchibg from wifi to cell towers. In this case your idea for using the larger fence probably works. You could also make a middle fence that maybe is not as large as the "large" fence but is bigger then the small fence. It can do nothin on entering but turn off the switch on exit. Rapid update of :30 or 1:00 on leaving the inner may make more sense in that case.
I also wouldn't hesitate to turn off the switch on exit on all 3 just to make sure its not missed.