How do I make a decent 4 on 4 paintball field? Answered

Make holes in the woods, stack up wood to form walls, you can make a bunker from 1 scrap piece of plywood too.

look at pictures of (or visit) sites and see how their bunkers are constructed using shipping pallets, barrels, boards, doors, sheet metal, etc.

then get 2 pallets for each bunker [to make them twice as strong] (if you only want them facing one way) and nail then back to back so you have one pallet with the boards going vertical, the other horizontal,

for example if you wanted 10 bunkers, get 20 pallets, and so on

NOTE: this is only my opinion on home-made-bunker-ism.

be creative, find things that would be good to hide behind (oil drums, an old door, etc)

hope this helps

Just make a bunch of obstacles and barricades.

If you can find a large forest, lots of cover and tactics can be used

stacked boxes, places where you can hide, etc