Are Bipods Needed?

I used to never use a bipod. They can be unnecessary weight, get stuck on branches and twigs, and sometimes never get used in a game. However, there are times when a bipod is ideal. For instance, scanning a field for targets/enemies can take a long time. If you have set up a hide, you can be in one place for quite a while. You can set your rifle up on a rock and look through your scope (unless you have binoculars), and this will prevent your arms from getting tired. However, this is where the bipod comes in handy. Sometimes there is nothing in the wild to support your rifle when in prone, and the bipod becomes a very useful tool.

Overall, depending on the game, a bipod may or may not be useful. It is up to you. If you get one, a harris style bipod is recommended. It looks sexy and gets the job done, much better than the typical bipod that comes with most rifles.

Weight of a bi-pod (standard): About 3-5 pounds
Amount you'll miss if you don't have a stable firing platform to shoot at your enemy: Unknown, because the guys that do it don't make it back.

I'd say suck it up and just run with one man. Me personally I've almost always had one on my airsoft guns. Granted for the range that we engage it isn't the mile+ that real steel shooters are pulling off, however if you can't have a solid platform to which you know how to adjust too, your just shooting blind until you hit your person. There is luck involved, sure, but science can prove time and time again (as well as my "unofficial" rifle scores). If you're using a bi-pod, you're going to be spot on.

I'd suggest going with a Harris style or something with a little more give in it. Your bi-pod shouldn't be more than 6" in length and should be able to fold under your rifle. If you don't have a style like that, then you should reinvest.