I do not know what the cost to ASA is but a simple flight note to the effect of departure, arrival and enroute deviations and a SARTIME works for me. Saves a plan in the system for a class G VFR flight.
I don't get charged for it and that’s great but I would rather not create too much cost to anybody without the need to. If I fly through CTA sure a plan is common courtesy to ATC and still no charge, but if its all class G why go to that expense for basically a SARWATCH service.
Cheers
J
