Theres no universal answer to which hook size you should be using, but for every fishing situation, theres some guidance to be found
Brig Chatham, May 14th: E & J Isnard, G J Jeffries, J R Bradford, T P Shaw, T Cusack, T W Frelan, Jn Vroom, W Locke, G V Knight, Jn Prince, D F Dodge, I G Hodge, W Coleman, Wm Walden, J C Huffington, W R Tibbetts, Jn Miller, J S Phillips, J Gregory, B F Graves, Andw Waddison, E J Flinn, J R Paddleford, A K Vanderwalker, M W Weston, W V Wallace, J H Jourdan, A P Crowell
Tie in a 3- to 6-foot section of 4- to 8-pound test fluorocarbon to the lure, which adds stealth in clearer water
This Shakespeare Omni 070 2000B Series was, I believe for sea fishing
Set it to a high number (like 8 out of 10) to start
Personally I feel that fly fishing for muskies plainly sucks in most aspects, and very few pieces of gear out there right now are perfect for the purpose