In exploring design and working with the loop link software, I am asking this just to learn more about the concepts.... Lets assume a system has a loop design of 4 x 3/4" x 700 ft loops. Other than the obvious answer of expense of pipe and digging, would adding a additional loop ( making 5 in total ) provide a better "reserve" to use versus using longer pipes, such as a 4 x 3/4" x 800ft. It would reduce the flow in each pipe and provide a much larger area for exchange... In the software, I basically see about a 2 degree change in the max EWT.... Is there something else Im missing? My background is electronics and using the logic of heat sinks, Ive never had a circuit give problems by having larger heat sinks, but lots of issues with sinks too small. Thanks in advance. This is a learning experience for me, like a big curious kid.