The mainsail on my boat has a dutchman topping lift system. I have never seen one of these. I tried putting it all together per the owners manual for the system, and it seems to work ok. I'm not convinced I am going to like it though. My guess is that you have to release the system from the topping lift connection, and catch the end of the boom with the topping lift every time you want to put the mainsail cover on. Anyone else using this system? If so, how do you like using it?