LOL....Im sure the longhorns would love the idea of hay at the pond.....I might need another option for erosion control.
You may need to fence off the seeded areas for a while and only allow the those things access to a small area of the pond...or better yet, a different water source entirely as they will keep the pond perpetually muddy and overloaded with nutrients. Perhaps a simple small siphon pipe with a float valve to a water trough below the dam would be possible....a fairly cheap and easy solution.
