Sorry for the delay, my dears, I just couldn't get out for awhile to try again.
It turns out my unit was set to show course direction, not bearing, just like you said, BogSlogger (great name by the way) and after I switched it, the direction and distance started moving in sync. Hurray.
I still haven't found my first cache, but I had fun looking anyway. And I can see the wisdom of cache-in-trash-out AND of carrying an explanation of the game, in case anyone wonders why the madwoman is thrashing through the brambles.
Thanks for all your advice!
I can't wait to get out there again.
Maisie