I took my mast down and re installed it on my 245 with the help of several friends... Tie a line on each of the outer side shrouds as you unfasten them, and have a person take each one 10 - 20 ft outward from the boat. they will keep the mast from moving from side to side by keeping light pressure on the lines. then do the same with the front shroud, using 2 people on that line, and then the rear shroud. when all the shrouds are unfastened and have lines attached and people holding them, take the front bolt out of the mast base, leaving the rear bolt in. unfasten any wires coming from the base, and slowly lower the mast towards the back of the boat. As it comes within reach , I stood in the cockpit and added some support as it came down, once it is down, you can then have several people hold it to take the pressure off of the rear bolt so that it can be removed. Have done this several times on my 245, never had any problems with this method. Just take your time and use a little caution.Jon