IMHO, you really don't need to mess with tea balls, bags, straining cloths or anything else... following is Black Hand's post that he posted the link to - I'll copy it here to save y'all a key stroke - and I will attest to the fact that this method works perfectly and makes a superb cup o' joe!:
First of all, make sure you have good coffee, preferably fresh-ground or freshly roasted. While I have drunk lots of Folgers and the like, it is not what you want to use. Save it for use at home and splurge for the woods.
Get your water boiling and add a generous amount of grounds (remove from the heat for this as it tends to foam over) and replace on the fire to simmer. When (most of) the grounds seem to have sunk, remove from the fire and trickle cold water onto the surface of the coffee (this drops the grounds to the bottom). Enjoy.
Try not to BOIL the coffee, as this will tend to make the coffee bitter.