While I don't have a hydraulic top link, I want one!. I learned my lesson while spreading a bunch of dirt with a small angle blade. I was constantly getting on and off of the tractor to adjust the top link to set the angle of attack of the blade. It is not that I am just lazy, as has been pointed out by others, when you hop off of the tractor to make an adjustment, you have to "try" that adjustment on the materiel you are working. It would seem much easier to adjust it on the fly and get instant feedback as to how that adjustment worked out.