Can I install Objectdock 2.0 without Impluse

The Free Version you can.

if you buy the plus version you can disable impulse and run it when you want to check for updates

http://wiki.wincustomize.com/wiki/Impulse_Now:_How_to_Disable

There should be an offline version round here somwhere contact support for the link & instructions,Impulse is nothing more than a standalone installer with a few bells & whistles added,as every bit of software you have has it's own installer using impulse means you only need the one for the products you purchase,saves gunking up the comp with even more crap you don't need  besides impulse can be set to only work when you want it so a few extra mb residing on the comp won't kill ya 

There is now a standalone installer for ObjectDock Plus 2. You can either enter your email address here to have a download link sent to your email:

https://www.stardock.com/support

or login to the forums and visit the following page, then click the #2 link next to ObjectDock Plus v2:

https://forums.stardock.com/account/regs