We added a network switch to the Closson Gym in order to be able to add a second Wireless Access Point. The two APs allow for twice as many devices to connect at the same time. These were put to the test with the crowds for the division championship basket ball game and at Graduation and worked well.
Many factors cause problems for Wi-Fi in the gym, including it's unusual design and limited network ports. It's never going to be a great place for Wi-Fi, but it's good to make improvements.