[amsat-bb] low hanging fruit:portable antenna setup

Hi all, Looking to optimize my portable antenna setup for best performance. I've got an Elk dual band and an Elk 8 el uhf log periodic for uplink/downlink. Gain figures (from Elk) are 7db give or take for both bands and 8db for the 8el uhf How should these be mounted to minimize interaction with the ground, each other and the tripod for the best results? 73 es have fun, Norm