Hi Jeff,
The set up on mine has two metal lines attached to the mast with a tang and each ends in a small block.At the forward part of the boom a padeye is attached on port side and then a braided line is run up to the block on that side and down to another padeye onthe rear section of the boom; The line then goes under the boom and up the otherside to the block on that side and then down to the boom to a cheek block which leads to a cleat.I intend to have a longer braided line which can be eased out so that it can be pulled back to a cleat that is on my mast and I will use a bungie cord to keep it in place when not needed. I do not use the lazy jacks as a topping lift even though it will temporarily act that way if not eased.I have the proper dimensions and if you forward me a fax number I can send you a set of instructions and measurements too. If I had a larger boat/sail I would agree that they are not the best things in the world but they are easy to handle if you are paying attention when you raisethe main on a 25.
Regards Jackie