Scrimmaging and simulating gameplay situations is good, but sometimes players can really benefit from having very specific target training. Sometimes you can accomplish this through cooperative drills, but sometimes using target training equipment can give players a different perspective.
One of the advantages of using equipment like those listed on this page is that you don’t need a whole group to work on a specific skill. For one-on-one training and coaching, this can allow the player to repeat specific skills over and over and build correct muscle memory.