I cut a flute from Coroplast on a lot of planes now.
I still use the CA hinges and Klett pinned type and Robatr hinge points, among others. Depends n the application.

I ended up replacing the CA hinges for the rudder of my Fokker Dr1 ARF with 3 TIGHTLY spaced Great Planes plastic hinges, using one piece of 1/32 music wire for the pin. It was the only solution to flutter. (High tension on a kevlar pull-pull system and a high power servo did no good.)