I have flown Piper, Cessna and Beechcraft with "all flying tails" ( called STABILATORS). Got my IFR in a musketeer. All stable and forgiving. In order for it to work, an ANTI-SERVO trim tab is used in all of them. Include the Thorp T-18 too. All the Zenith designs by Chris Heintz have a FULL FLYING rudder. The anti-servo tab is used to give it "feel". so does the "over hang" on the Heintz designs.

Only helicopters with hydraulic boosted controls use springs or bungies. Gives it an artificial feel. In those, if let go of the stick, it would fall over to one side.

Bob