That sinking stuff reminds me of my kids! There is a big spring that feeds a cat tail swamp just behind my house a few hundred yards. The cat tail swamp is maybe 2 acres. My kids are fascinated with it. They have learned it's just not doable in the warm weather but as soon as theres a freeze they start venturing out on it. Everytime at least one comes hom bootless! 1000 years from know some archeologist is gona swear there was a rubber boot factory there! i bet the boys have got 60-70 pairs in there already!