I used a Satelitte Finder meter that looks similar to this that connects in-line close to the SAT DISK side and has a gain adjustment on it. You crank down the gain untill you just barely hear a noise. Then move your DISH to the area in the southern skies where you think the satellite should be located and when the dish picks it up it will start giving off a louder tone. Keep turning the gain of the meter down and keep peaking on the louder tone until you pin point the maximum signal.
photo from google images
I think I got my satellite finder from Wingard $30
After I have found the strongest signal I usually remove my meter but it probably isnt necessary to do it.
There is one drawback I found with using this method is you cannot tell the difference between the DirecTV signal and the DISH signal so when you go the TV to see what you have you may be looking at the wrong satelitte. I thing I remember the DISH network is centered south of CALIF and the DirecTV signal is centered south of TEXAS...
I dont use SAT TV anymore in the RV since high def NATL BROADCAST digital television is available just about everywhere we go. If we really want to watch something from the CABLE TV side when camping off the power grid we use our laptop and watch it on-line.
I had great reception when I went to the tri-pod setup. I originally was setup on the RV Trailer but since you always want to setup under the shade trees you ended up blocking your SAT signal.
Having a multi-mode head like you have is great. Run one head output cable to the SAT RCVR setup in the bedroom and the other cable output to the living room SAT RCVR setup. Then run the third dish output cable to the pass-thru storage area and watch TV sitting out around the bon-fire.
I never had any luck whatsoever trying to use the SAT CONNECTION on the trailer. I always ran my SAT CABLES into the trailer and connected directly to the SAT RCVR. Then I would run VIDEO OUTPUT cable from the SAT RCVR to the VID 1 input on my TV set. Now I can swicth between SAT TV and CABLE TV with my remote.