I cant understand the issue some quite clearly have with setting up a satellite dish. I think it's normally an easy task if approached systematically rather that aimlessly [pun intended] moving it about.
The difficulty, if I have it, is finding a sight line through the vegetation, as the fundamental is the dish must 'see' the satellite. Here fixing it to say the jockey wheel screws your options as it is harder to move a fixed dish around a pitch to get that sight line than move a portable one.
I use a small ground hugging dish with its own built in tripod.
http://shop.satelliteonline.co.uk/fast-finder-portable-satellite-dish-kit-330-p.asp
An asset this brings is you can hold it just off the ground, with one hand and turn it till its 'right' before planting it down. You might then need to refine the elevation and alignment but only by fine amounts.
My technique is to use a compass and lay a thin cane* on the ground at an azimuth of 140 to 145 degs. Compass put away then with the cabling set up, 'finder' in place and box powered hover dish over the cane and if things don't immediately burst into life slightly move the dish a fraction further to the south [ie towards 150 deg]. In that arc you will fine the right satellite cluster for your UK programs. I had pre set the dish elevation to about 26 deg.
The cheapo 'finders' like mine scream at any healthy satellite signal, not uniquely at the right one. So it does not detect anything more than the strength of the signal, not that it is the right signal. This however is useful in fine tuning the optimum position to leave the dish. My 'finder' is also far to sensitive for that fine tuning, it screams blue murder if its anywhere near right even with it's gain turned down; I want more finesse and for this I have found installing an in line attenuator in the LNB to finder cable a great asset.
http://www.screwfix.com/p/vhf-uhf-6db-in-line-satellite-attenuator/24426?cm_mmc=Google-_-Datafeed-_-Electrical%20and%20Lighting-_-VHF%2fUHF%206dB%
For us Brits the true “Freesat” tuner is a good start as unless you have fiddled with the menu settings you are only going to get it to work with the 'right' satellite cluster. A generic decoder can more easily fool you as it will happily find any number of satellites.
I use a garden cane as it does not screw up the compass as the dish or any steel will.
I also borrow and use my veranda pole which is GRP, and often easier to find than my cane.
Edit: for judging that sight line through and over hedges and trees etc a useful rule of thumb is the beam in the southern half of the UK is coming down at approximately one in two . Therefore if you are setting up at a distance more than twice the trees height away the beam will miss that tree.