Guide me to multi lnb setup on 6ft dish

I have 6ft dish which prime focussed towards IntelSat 17 66.0 E and recieving most of the TP (as IS 17 is weak sat & fully catchable only with 8 ft dish).... So I decided to add more lnbs to this step (multi LNB Setup) like 78.5 E, 83.0 E, 68.5 E etc... So help me to how calculate the distance b/w 2 lnbs & point me with necessory tools and tips. And also gave me suggesion in which side I can add more lnb ? (i.e Magnetic North, South, West, East etc)






nb : I already asked this on here stbfirmwares.com/Thread-Seeking-Help-multi-lnb-setup-on-6ft-dish-prime-focussed-towards-66-0-E.
But I won't get convenient reply...