By good cut, do you mean precise or do you mean clean?
I think it will be a person by person kind of thing. Some people will take more time to be accurate others will not. I know my Home Depot has a sign that says "No Precision Cuts"
I was building a shoe cabinet for the wife and "tried" to have a sheet of 3/4" cut into 16" strips. They all were off by 1/8". Your best bet may be to look at the "handi panels" that are pre-cut to 2'x4'
it dependents from person to person....I think Lowes and HD have the s similar panel saw.... if you can't trust them then ask them to cut a little over size and finish cutting at home to the final size ? I think some HD / Lowes I went to also have that disclaimer.... usually for my area the Lowes operator is a little less competent than the HD guy.
keep in mind that there is a saw kerf so if you ask him to rip it along the 4' section you might not end up with exactly 2 of the 24" x 96".
I needed multiple 15" cuts made. I did not need to be perfect 15" but they all needed to be the same. So I told the guy, you can waste the line or cut to the right or left but just do it the same way each time. The guy looked at me with "the deer in headlights look"
For the OP, the cuts don't have to be that precise, so having them cut is OK, or as he said, buying the ready cut 2' by 4'. Have to admit, I had to look up "Corn Hole Boards". I had no idea.
When I need to cut plywood the full length, or close to it, I just use a very straight 1x6 clamped to the plywood as a cutting guide for the table saw. You can be very precise, but it is a bit time consuming. We even scratch build some cabinets with less than 1/64 tolerances. Like I said in that thread, I forgot how time consuming cabinet making is without proper cabinet makers tools.
... If I need really precise cuts I'll do it myself even if I need to set up sawhorses in the parking lot and cut it there.
