Good Afternoon, all... I design professional pitching horseshoes. I am trying to determine if the method used to mount the stake in the horseshoe pit affects the recoil of the stake when a horseshoe hits it. A stake that loosens over time will reject a horseshoe more readily than a solidly mounted stake. However, the method used to mount the stake in the first place may also affect the recoil. Is there a simple method available that will generate a vibration that could be read. I would like to be able to test the results if the stake is hit at the top (15" above the pit surface), middle (7.5" above the pit surface), and base of the stake. Thanks for any suggestions.