I'm a 3.0 and I can aim pretty well. Granted I'm pretty athletic, played other sports, and took to tennis very quickly but I find that it doesn't take much to learn how to use the court wisely. The most important thing in my opinion is your movement. If you get in good position you can hit the ball anywhere.
That being said when I hit with buddies who are 3.5-4.5 level players I find that I can only really aim when they're hitting their rally ball. If they start adding lots of spin/pace I can only aim in the general direction of cross court or down the line, but it's much harder when those variables come into play.
The best lessons I've learned from higher level players is knowing when to hit a 70% ball with lots of spin/depth that's placed well and when to hit a 99% winner. If you keep hitting a good 70% ball you'll find that the points may last longer, but you'll make a lot less errors. Another good thing to keep in mind is when to change direction during a rally, i.e. inside shots
That being said when I hit with buddies who are 3.5-4.5 level players I find that I can only really aim when they're hitting their rally ball. If they start adding lots of spin/pace I can only aim in the general direction of cross court or down the line, but it's much harder when those variables come into play.
The best lessons I've learned from higher level players is knowing when to hit a 70% ball with lots of spin/depth that's placed well and when to hit a 99% winner. If you keep hitting a good 70% ball you'll find that the points may last longer, but you'll make a lot less errors. Another good thing to keep in mind is when to change direction during a rally, i.e. inside shots