If I have a standard FLIP particle system from which I created using the emit particles shelf tool, to what node inside the particle_fluid obj do I attach a ROP output driver in order to geocache my sim while retaining all the necessary channels to create a whitewater sim?

Thank you for your help and I apologize in advance for the “newbiness” of the question. I'm really trying to gain some houdini traction and these little hiccups are really hindering my learning progress.

You don't need to do that. It's already set up for you. If you look at the first node in that chain, I believe it's called DOP I/O (I'm not in houdini atm), you can cache it to disk through that - and when it's done, just tick “load from disk” and you are ready to go.

awesome, just what I needed to know! Thanks a bunch dude!