Nice job to your grandkids and to you as well for supplying them with memories they will have for a lifetime... Someday they will be taking thier own kids out there and teaching them what Grandpa taught them.
I know I love teaching my kids what my grandpa taught me especially spitting on my poles for good luck they think im nuts but I do it every time I fish a little piece of my Grandpa that will be with me on every trip.
Keep up the good grandparenting
Jerkbait