Originally Posted by JackB1
I think the "control" part is overrated at anything less than 4.5 level.
You can add more control with string types and tension. You will not be hitting the back fence. If you want to paint the lines at the 3.5 -4.0 level, you are going to play low percentage tennis which won't translate to winning at this level. Only valid reason I see for 18x20 at this level is if you prefer hitting a flatter ball or lower trajectory. Lower trajectory = more risk = more errors.
I think a closed pattern works at any level, it just matters how you hit the ball. tennis is not so black and white.