Eddie,
Are you saying that you have never left an arrow in the woods?
I know I have and I'm not exactly a slouch when it comes to hitting what I shoot at.
What Grandad had in mind was not that you couldn't take game efficiently with an arrow, but that most folks back then used crested arrows.
If you did not recover such an arrow you might just as well have left a signed note for the gamekeeper. ;-)
He taught me on land where we had permission to rove and take game within reason.
I guess the keepers thought it better to have local eyes on the ground and be warned about foreigners long netting and such than to try and ban a local who was out there more often than they were and would take game if he chose, like it or not, if they were to ban him.
The owner was an incomer anyway. New money from commerce and his family had parked quite a bit of the farmland so there was still some resentment locally, but he had the sense let the head keeper run the game side of things.
Grandad was a yellowbelly, "out of the ground" as Rudyard Kipling once described it, and regarded most of the proprietors in the county as usurping incomers, except for the people over at Bourne who, although they came with the Normans, had settled in and become accepted.
Rod.