When I had to catch 2 Sergeant Majors in my old 135, I used sticks and various kitchen utensils, to block as many of the caves as I could. Even though it still took almost 4 hours, the blockages threw them off their game just enough. I did have to move some rock too, but finally got em'!!
Gladly given back to the LFS
!! They both had gotten over 3", and we're tank Pirhana!! That was my first and last dealing with Damsels.