Acton can be a good field for a variety of rockets when the wind is not blowing toward the trees. Best when the wind is blowing toward RT 2. According to Windy.com, for Sunday, the wind direction is pointing NE which is RT2ish. Some of what I fly in Acton:
Leviathan 20 OZ on an E30-4.
Optima Pro on an E16-4 or E20-4
High Flier XL 4.4 OZ on a C11-5
Executioner 11 OZ on an E12-4 or Quest D22-4
You can listen to the RSO to see who is flying what rocket on a given motor, then observe the altitude.
As Kenn would say, "Keep your rockets on the field."