I had a G.P. Big Stik with an OS-70 which I had converted to tail dragger using the existing main gear and it was very springy. I ended up adding "flying wires" by drilling a hole on each leg about 1-1/2" below the fuselage and another above the axle stud on each side and sticking a wire fishing leader between cotter-pins placed in the holes, so that they crossed below the fuselage. Worked like a charm, and on low & slow fly-bys it gave the plane a unique whistle.
Distance of hole from fuselage is determined by trial fitting the leader wire, and farther down will produce a stiffer gear response. Use 20lb test or lighter, and you can rerig on hard landings . . . if you have such things.
Bleeding off speed and landing flat also works well.
