Re: suggested method for picking up line?
Farm pond? Is your weighted fly literally hanging up in vegetation or bottom structure?
I usually do the above (roll up to surface, pick up) ^^.
On a farm pond you might try less weighted flies of the same pattern (bead chain instead of lead eyes for example) since you don't have current and can just wait for the fly to sink all day long. I only use really heavy weight flies in current.