I've been using 2x/10lb both Orvis Super strong and Frog Hair. I'm sure the lighter test lines are more susceptible.
I was checking out Jack Gartsides web site last night and he mentions rounding of the corners on gurglers to reduce their tendency to spin.
I'm thinking the easiest bet is to have a set of ready-to go tippets (I use a loop-to-loop to a regular tapered leader) and then check/change as needed.
When sight fishing, look over your shoulder from time to time, you never know who's behind you