Keep in mind that this forum is a mostly speedball based forum. So unfortunately, you get the uneducated responses like "It makes you look retarded" and the like.
I have worn a ghillie, I still do on occasion.
The purpose of the ghillie is not to camo you up, but to break up the contour of the human body. You camo it up by adding natural foliage to it, to look like a bush.
Most people here will tell you they are pointless, useless, and have no place in paintball. Keep in mind that the cast majority of those who say this have never worn on, or never been taken out by someone properly using one.
As someone who has wears and makes high grade ghillies, I can tell you this:
If you use it right, it will work fine. The ghillie depends on your environment; the field you are playing on, the type of game being played, the natural cover that is around you.
Obviously if you have 5-10 minute games it will not be worth it. If you are playing scenarios or longer woodsball games (30 minutes and over) then it will be fine.
Practicality if only determined by how you use it. If you walk down the middle of the trail asuming that some camo netter and weeds will make you invisible, it will obviously not be practical. That is using the ghillie improperly.
If you stay in your well picked spot, and have your observer/spotter also heavily camoed (ghillie or just well hidden), and use one or two rounds on one target and then not shoot for a long enough time to be forgotten about, you will be fine.
Check out this thread:
Tips and Tactics Articles
For probably all the information you will need to know about using your ghillie, and playing woodsball with tactics in mind.
do you wear a ghillie suit?
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