Hey Scott, which lake are you on? I'm in the Seattle area as well. I would recommend the moorign whips for two reasons- 1) depending on the amount of Boat traffic your lake has, your boat is still going to rock and roll a lot when you're not around- and that's a very nice boat to take the chance of having it banged into the dock. More importantly, 2) your boats hull will get very fugly sitting in the water all week while you're gone. At best it will yellow significantly and be a real mess to clean up- at worse, you'll have stuff growing in the water intake, muffler outlets, and on the entire boat bottom.
I would either invest in the lift or storage closer to your cabin and just accept that you've got to pull the boat every Sunday before heading home. Either way- i'd love to have your dilema- we're looking for a weekend place right now.