BG wrote:
Does anyone use a PDA to record in a small spreadsheet the departure
airport, your destination airport, and the Hobbs & Tach readings when
you land?

I do it with a paper kneeboard fuel log form created in Excel. The
kneeboard is already there, the PDA isn't. When I get home or to a
hotel, the fuel log easily recreates my log entries. I only bother with
tach time as a reality check, because we've had two occasions in two
years where the Hobbs didn't move.

The log lists start times, start fuel, and on/off times for each tank.
I verify each time I land, and enter any added fuel as necessary during
the trip. There is blank space at the bottom of the form for random
notes, ATIS ID's etc...

My PDA does have a weight and balance spreadsheet I created that works
very well for on the spot W&B.