I no longer worry about forgetting to lower my keel onto the keel rest when trailering...then remembering to raise the keel when I launch. I made a spacer out of a small chunk of Sea Board I had laying around. A hole saw was used to make a round cylinder from which I cut off a slice of the appropriate thickness (this will probably vary from boat to boat). I drilled out the center then hacksawed a notch so the hole kind of looks like an old fashioned keyhole. (See picture.) I then snapped this onto the hydraulic rod (see picture). This way, I cannot raise the keel all the way up and when I float the boat onto the trailer and pull it out of the water, the trailer keel rest contacts the keel and lifts it up a little bit taking the strain off the keel raising/lowering mechanism. Once on the trailer, my keel cable is slightly slack. Viola. If I forget to release the keel, it makes no nevermind as it is already resting on the keel rest! In fact, if I release the keel, nothing happens as the keel is already on the keel rest. Note I only changed the raised keel geometry a couple inches so it really does nothing. I do raise my keel when racing downwind...but the couple inches is not going to affect anything and I have peace of mind that I will not pull my shackle out of the keel or some other bad thing that can happen while trailering and forgetting to release the keel.