To get my horse to drink at rides I put molasses in his water....quite a
bit. Now that he's more experienced, he drinks well on the trail, but I
still use the molasses water the evening before a ride, giving it to him in
two-gallon buckets. I can usually get him to drink 4-6 gallons from late
afternoon until I go to bed. Not all horses go for this, I suggested it to
a neighbor at the last ride I was at, and her horse made a horrible face when he
sniffed it!