Check out the You Tube Field Day Video for the SJRA
These are a few of tested antenna configurations that I have deployed successfully with my Parks on the Air Activations. Each Parks on the Air site is unique and I take a different approach to maximize contacts. I use a fiberglass retractable mast with an overall length of 32 feet. For each antenna deployment I also use a set of (4) counterpoise radials with a quick disconnect at the base of the antenna.
32 Foot Vertical Antenna for Parks on the Air Portable Use
Inverted L Dipole Antenna for Parks on the Air Portable Use
Sloper Antenna for Parks on the Air Portable Use
17 Foot MFG Retractable Whip with a Wolf River Coil for Portable Use