I have a question about what will give the most heat transfer? I currently have no hood, and no preheat. I do have a 3/4" line coming from my tank that goes through a filter and then into my float set up. My arch is 4*12.

I have a 30-40' piece of 3/4 soft copper I want to install after filter and before float box. Should I wrap around stack, or build some sort of Manifold? I have some SS I could suspend above the pipe, and certainly I can put some sort of tray under it.

If I go with the stack, I don't think I would be able to wrap it more than 2-3 times. And if I go with stack should soft copper touch the stack or should I suspend away .5 ". I'm thinking that with the short piece of copper that vapor lock won't occur.??

I am not looking to spend money on more SS sheet material. However I do want to get my sap as hot as possible before it hits the pans.

Thanks