Thanks for the thoughts on this! We have asked them to use a different contract and they have complied. Just went with three years giving them first right of refusal but no exclusive use. They also cannot go anywhere or have access to anything but where their lines and pumps are.
We have a great bass pond that we will not let them touch and the pond we recently built we were hoping to turn into a crappie home. They are going to dig it out a little deeper and use that so all in all, it will be better for them and eventually the crappie. We still had a lot of work to do before we stocked it so maybe we can sell a little water and end up with a great fishing spot as well.