Depends what you are looking for.. Some HD channels are on the original sat
and don't need an HD specific dish.. Some of the other HD channels are on a
second sat and need a dual LNB/skew.

While not doing it for HD, I have used the 3lnb dish many times on a
tripods.  As longs as you get the top portion of the mounting shaft
perpendicular, it's fairly easy.  There is a small plastic gadget that
goes in the end of the mounting pipe that holds a bubble level.  Get
that centered and it's a snap.  

Skew is easily set, then worry about pointing.