the highest end of the sup'airball line of inflatable bunkers is their pro series bunkers. in addition to all of the other features it shares with its bunker siblings, the pro series bunkers have a separate chamber on the bottom of each bunker which allow you to fill the chamber with water. this allows you to set the bunkers without staking them in-perfect for fields that have turf installed, or even on grass fields as an alternative to using (and ultimately losing) stakes.
here is a short tutorial on how to properly set-up these bunkers for use on a paintball field:
1. unfold each bunker and place each individual bunker in their general, final position. for example, put all of the snake beams on one side of the field, the center piece obviously goes in the center, etc. this will reduce how far you have to drag a bunker filled with water to get it into position.
2.flip the bunker over so the bottom of the bunker is completely visible. do not leave any folds that will hinder the flow of water into the bladder.
3. remove the white cap and plug from the bladder valve.
4. begin filling the bladder with water. using a hose without a nozzle attachment is fastest. you want volumes of water, not pressure.
5. raise the valve a little bit off the ground. this will help in filling the bladder to its maximum capacity.
6. fill the bladder completely with water. you will be using about 5-15 gallons of water in each bladder, depending on the bunker. the bladder should be taking on a 'rounded' shape and should have a minimum of air inside the bladder. replace the cap and plug quickly, to reduce the amount of spilled water.
7. carefully flip over the bunker to expose the air valve. tip: the air valve is always on the same side as the water valve, and vice versa. do not 'plop' down the bunker as you flip it, or you risk blowing out the bladder. remember: water bladders are not covered under warranty.
8. fill the bunker with air as normal. FOR POSITIONING PURPOSES ONLY, you can slightly overinflate each individual bunker to make it easier to move around. once positioned correctly, remember to deflate accordingly!
do not leave bunkers over-inflated for long periods of time! overinflation is one of the causes for premature bunker failure (too much internal pressure). when using the water bladders, over-inflating the bunkers will cause them to go 'round' on the bottom, resulting in less surface area in contact with the ground. less surface area=the bunkers will get knocked around easier and get moved out of place. the ideal inflation for any bunker is to inflate it until the bottom of the bunker just begins to lift off the ground, then stop.
9. the pro series bunkers also have a handle installed to assist in positioning. many people use this handle incorrectly and inadvertently rip the handle from the bunker.
the best way to use the handle when moving bunkers is to tilt the bunker so that a maximum amount of bunker is lifted off the ground, then pull the bunker into its final position. remember: the air valves always face the nearest start gate!
10. cheats: you can 'cheat' on completely filling the snake beam bladders with water. these things get incredibly heavy once filled, and all that weight isnt necessary for a bunker that doesnt really get bumped into that much. i usually fill each bladder to about 60% capacity so i am not breaking my back trying to position the beam.
11. setup takes me 4 hours average time from start to finish, with 3 helpers.