so we sailed lake erie and now have the boat on a trailor,of course we new we would have to replace the bolt on the keeel and figure the best way to do this will be leaving the cable on the back and put blocks of wood on the trailor and with a floor jack with a lot of rope around the front of the keeel,take of the 4 bolts and then let the keel down and replace the keel bolt,we hope it will go that smoothly,we dont have any way to take the keel out and put it back up on the boat.any one out there done this before?