Why not just send the parking coordinates to the GPS when you send the cache data? Or, for those caches that have parking coordinates, send them instead of the cache coords? This is easy to accomplish using GSAK. Punching them in manually usually isn't necessary.
You are correct ... but ... I am new to this area and do not no all the back county roads. This way when I'm sitting in my driveway OR just finished up a cache and want to get to the next one I can do this without PRINTING OUT google maps. I do everything "paperless" utilizing my PALM pilot for the web pages.