[FrankJ]

The issue is, at competition, there is no DHCP when you are not connected to the field. IE tethered. You are relying on the fallback IPs to all be in the same subnet. If you use a mix of static & DHCps, chances are you will be missing something when the DHCP is not there or the DHCP is assigning addresses in a different subnet that the static IPs

Other than that, largely what Greg said.