Sometimes I wonder if it wouldn't be better for Boling to train for the 400m as he did in high school. In high school he was unbeatable in the 100m, even though he trained for the 400m.
Fred Kerley and now Michael Norman, have taken their 400m talents and training and moved down to the 100m.
Also Shericka Jackson of Jamaica.
Even Usain Bolt was a 400m sprinter, before moving down to the 100m.
There may be something in the strength and speed endurance training of the 400m, that really helps these naturally fast guys hold their form and speed at the end of the 100m.