Dave with the right methods you can greatly reduce the # of LMB without having to ask the guests to toss them. Some pond mgt. companies will shock some out with the intent on keeping them to sell to others who need bigger LMB. There are also other methods like seining for larger fish. But on this operation you need professional advice and eyes on analysis. Like a consultant (who is not selling fish) to help you develop a plan based on goals and then monitor the stocking and harvest.

You have the potential for a world class fishery with those temps and conditions.