If I lay my antenna flat here in the Seattle area, I get zip, zero, nada for a signal. We're pretty far out in the fringes here already.
You don't want to be laying it flat. Not here anyway. The antenna is quite directional. You really want to aim it at the satellite to get the best SNR possible. Point it in the general direction and then make small changes to bring the signal up.
I have two setups. I'm currently using the DreamCatcher running Skylark 4.4 with the passive air gap antenna on the LNA and SAW filter connection. I had to take my stuff inside because it started raining again. I tried aiming through the patio door, but the low-e glass attenuates the signal too much.