Jeremy, okay, the bitter end of our ...
topping lift is secured to a cleat mounted on the mast at boom level. This is the non-working end. I never need to adjust this end, but it is there if I need it. Of course from this end it runs up the mast, through a sheave at the top of the mast and down to a point at the end of the boom.The PO had the bitter end secured at the end of the boom to a shackle with the working end at the boom mast joint. After we purchased the boat I run the working end into the cockpit thus taking up an organizer sheave and line stopper.Since I needed to vacate a line stopper for the spinnaker halyard I decided to move the working end of the topping lift from the cockpit to the end of the boom.All I did to accomplish this was to make the mast boom cleat end the bitter (non-working) end and the end of the boom the working end. To make it work all I did was to connect one fiddle block to the end of the boom, then run the topping lift line through it to another fiddle block with integrated jam cleat. That way I can trim or ease the topping lift from this end.You could probably get by with one fiddle block with integrated jam cleat on your boat because your boom weighs much less than ours. Hope this helps.Terry