Can upside-down parabola dish help increasing angle?

[MMM]

I notice some satellite dishes in Honolulu area are upside down. My friend also told me that it can increase the look angle of the dish. Has anyone tried this before and what does it do.I could not get the stable signal for my dish. I got about 77% strength and 34-37% quality. I put it on the 15 ft. pole with fastened by slings to make it stable. However the look angle is quite vertical. (23.6 degree). The dish azimuth is 93.5 degree. There is some trees that may be in line about 1/2 miles away. I suspect that it may be the trees that can cause the unstable signal. But some say the signal strength from AMC4 (Texas) is not strong enough. Here is my dish info.
Satellite: AMC4
Dish diameter: 72 inches (parabola)
Receiver:Traxis DVS 2500
zipcode:: 96744

Please help. Thank you very much in advance.

 

[korsjs]

Do a search for the user PSB (i believe that is the correct person). He has posted pictures and other info about upside down dishes.

 

[Mr Tony]

closing thread for purpose of duplicatio

poster asked question here

http://www.satelliteguys.us/showthread.php?t=25425