Taper, one thing I am considering doing is the following that I got from another board. It would allow me to waypoint humps, etc. that aren't visible. It may help you also. I can take scans of the Canadian Hydrographic maps that I have and use them. Here is a Copy and Paste of what he did:
I had a great old paper map, and thought there has to be a better way than riding around with a map on your lap, looking for that hump that you want.
One day while playing around with Google Earth, I found a button where you could overlay images onto it.
I scanned my paper map in sections, then using Adode Photoshop,pieced it back together, erased everything outside of the lakes banks, converted it to a GIF image for transparency, then saved it on my computer.
Then it's simply a matter of importing it to Google Earth and lining it up with the satellite image. I was suprised when it fit perfectly.
I could then run my mouse across the screen, hover over whatever I wanted, and get the GPS coords for it, and enter them into my GPS manually.
It actually worked better than I thought it would, and alot easier than riding around with a map in your lap.