Hook size

Should I go with #4 or #6 sickles on 1/16oz ball head jigs?

Both have their places.

I use both... #4s for 2" bobby garlands and #6s for 1 1/4" panfish assassins

Both have their place, but most of the time I use #4 and only use #6 on special jigs, like the Gray Ghost!

Skip

both and even some with a #2

When fishing heavy brush I prefer #4 and #2 for open water and stumps.