Just,
This is from the June 26, 1944 Harness Horse and I thought it was quite unusual. (Wish there were ore details):
Rilda Mite 3, 2:073/4, which topped the summary in the $2,000 three-year-old trot at Old Orchard Beach, Me., last week, failed to handle one hind leg in a manner to suit Henry Thomas during her training, so after making various experiments in hopes of improving this peculiarity in gait, he finally decided to make use of a heavy rubber band which he placed around the limb, above the hock, and this innovation evidently has been helpful as she showed marked improvement, finishing 1-2-2. The rubber, one naturally concludes, has a tendency to restrain to a degree, some muscle which was not functioning properly. Rilda Mite is the property of A. L. Derby, Wichita, Kan., also owner of The Hambletonian favorite, Yankee Maid 2, 2:04, which Thomas trained in 2:03.