Can anyone translate "Salmon Fly Rod" (as in fishing rod) into Latin?

There are no reliable online translation tool for latin. Also I don't believe we have any members that are well versed in latin (it's been 6 years for me - a little rusty!). I recommend that you try this forum:

Latin Forum :: Discussion Board - English to Latin Translation

They may be better able to help you than us.

Furthermore, depending on what a Salmon Fly Rod is, the Romans may not have had any meaningful name for it.