i think it depends on the sats but i've been thinking about getting a Multi Lnb Bracket to pick up not only Galaxy 25 ( used to be IA 5) but a circular sat as well.
I don't know if it would work so well for two linear sats, but of course that would depend on the dish and it's size/shape.
check ebay or other places, i usually search for "lnb bracket" and that usually helps, there are ones for both small and our large dishes.
example:
How to setup 101
i think this is what you meant right?