From the "Compleat <sic>Taildragger Pilot"

His point is that the bounce comes from a downward motion of the tail when the gear makes contact and thus increases the angle of attack and increases lift. The problem is at the top of the bounce, you are now running out of airspeed and close to the stall.

With a wheel landing IMMEDIATELY on contact, the stick/yoke goes slightly forward to pin the airplane with a wheel landing. Otherwise you get the bounce again. Going forward seems odd if not outright wrong. But it works.

Finally, too much speed on final or on contact also contributes.