This is less an architecture question as it is an agriculture question, but I'm wondering if anyone can provide some insight.
My home course has bermuda fairways which go dormant in the winter. The other thing that happens in the winter is an even larger majority of the club walks (carts on path-only), so less people carry any sort of fill-mixture. The result is we see more divots in the fairways as bermuda divots don't revive themselves (even in summer).
I played a course recently were the walking members all carried a small container full of fill that clipped to their bag. These weren't that heavy, so it seemed like a good way to get walkers to fill their divots. When I was at Prestwick in January, they allowed three options from the fairway:
a) move the ball to the closest place in the rough
b) play the ball off a tee
c) have the caddy fill in your divots (if they had brought anything...this was not used that day)
So the idea of a small container seems useful (and feasible), but would it do us any good? Does bermuda spread at all in the winter, or wouldn't that fill usually be washed away during winter rains? Should we be adopting rules like Prestwick, or just live with divots in the fairways for 3 months a year?