If you've got a dob you need an observing chair of some sort!!!!!
Without something that will allow you to sit so you can still view through the eyepiece when the scope is aimed low, high, or somewhere in between you will find viewing uncomfortable to backbreaking!
I originally used 2 chairs - one was a timber garden chair for low angled viewing, and the other was a bar stool for that "perched up high" eyepiece position.
I now have a single "
Stellar chair" which is excellent, but costs the best part of $200. If you're handy with timber (or even if you simply have more desire to save, rather than spend, more money) you may prefer to build a chair along these lines:
http://www.iceinspace.com.au/index.php?id=63,10,0,0,1,0
http://www.iceinspace.com.au/forum/s...=stellar+chair
Cheers!~
