Flyingcheezhobo, I am in the same boat as you. The track in my backyard is in the woods too. Here's what I did:
For the track:
Get down to the dirt. Rake ALL the leaves and branches out of the way and pack that dirt down (water may be needed). When my track is damp after it rains, my car hooks up great.
For the car:
On my STRC LCG Slash, I use Pro-Line Slicer tires in front and Pro-Line Gladiators in back.
If I want to tear the track up, I use the SupraSales NIB Big-Blocks BKD Pre-Mounted 1/8 Buggy Tires. They're hard rubber Pro-Line Badlands knockoffs. http://www.ebay.com/itm/NIB-Big-Bloc...item2ec2e29ab8
But to use these you will need 17mm adapters like these: http://prolineracing.com/performance...ers/2wd-slash/
More money than it's worth? Maybe.
I use Pro-Line Trenchers on my Stampede and Suburbs on my Rustler (used on a different track).
Suspension may also be in need of a tweek. Losi springs and different weight shock oil will help your car stay planted.
Adjusting the car's "toe" may also help your car maneuver better. In a rear wheel drive car, more "toe in" helps with driving straight but decreases turning and visa versa. When tires are "toe in", the car looks pigeon-toed. Sometimes dodging trees requires lots of "toe out."
RC addict and loving it
somewhere near Grass Valley, CA --- let's bash