You will not regret wearing gaiters at Indiana Dunes. These inexpensive and lightweight boot covers work nicely to prevent sand getting in your shoes. I initially started the trail without them, but it didn't take long for little sand dunes to form inside my boots. Andrew wore them from the beginning of our hike and had no issues. After dumping out my shoes and putting on the gaiters, I didn't have any more trouble either. For the price, these are well worth having.