here we go, ya ready?
Ok, first thing is to devise your stands. Here is the description of one of mine (one under the stern, the other under the bow): 2x8 3/4" sheeting is the cross piece that the boat rests on. The two legs are formed by 4 foot long 4x4 at the base and vertically two 3-foot 2x4 spaced to accomodate the sheeting at the middle. For support the vertical pieces, a 2x4 runs down from a little less than 2 feet up the vertical 2x4 to the ends of the 4x4 foot. At 45º, being sure to use all inside measurements for convenience sake, the length of that piece will be square root of 2 times X, X being the same along the foot and vertical post. For extra stability, I then tacked on 2x10 plate running down the vertical post the 4x4 and cut at 45 degrees across the top to tack it neatly to the diagonal. I mounted the sheeting to the legs with 2, 1/2" bolts on each side. It can be mounted flush for about 3 feet of clearance or just a little higher. I then cut in the underbody shape for the boat to fit into. Below this cut, I bolted on a crosspiece for torsion stability. I used a 4 foot section of scrap 2x8. Maybe I'll take a picture and post it later today.Now, to lift the boat. It takes me about an hour once I have my materials assembled: alot of concrete blocks, cinderblocks, or even wood blocks on the order of 12x12, scrap pieces of 2x4, scrap pieces of sheeting, bottle jack, and some lifting crossmember. I used an i-beam, however, I've seen a few (sometimes 3, sometimes 4) 4x4 strapped and cinched together with tie-down straps used. Be sure to cinch it down as tightly as possible if you go this route; the straps add strength to the wood in the same way as a cast or wrist braces. The wood will flex, but it should not crack (if it does, let her back down, the straps should still keep it together just like a cast). So building up the cinder blocks on either side I lift up the bow with the jack, alternating sides until the boat is supported by the crosspiece, resting on stacks of cinderblock, high enough for the trailer to slide out underneath (and wide enough for the wheels). Usually, the stern can be set on the stand simply by lowering the tongue, inserting a stand under the stern then raising the tongue back up. You just need to make sure the stands are not too tall when you build them to do this. Then lower the bow onto the the other stand. Any questions??