Enchanted Forest - Native Species Plantation Mystery Cache

Native species plantation forests are intensively managed forests with > 30% canopy cover, which have been planted by people with species that occur naturally in that country.

We herd teh servants talkin bout dis great nachural woodlandz so mutch dat we came up wif dis appropriate seriez ov cachez. As an addd bonus, find an log all teh "F" cachez an u will be rewardd wif nice piece ov geo-art on ur map ("F"). Containers r large (4 us) an r hidden kat style. Teh containers contain key dat will allow u 2 unlock teh locashun ov teh bonus final cache. Plz do not disclose in ur logs anything about teh keys.

Cache iz not at postd numbers. Anzwr teh 2 queshuns below 2 git teh numbers u r lookin 4. Since we r fanz ov teh Lowrance machine, dat wuz usd 2 git teh numbers. Difficulty ratin iz for puzzle. Terrain ratin iz for hide.

No nite cachin allowd. Cache iz available only frum 8am to dusk. Plz respect teh area an stay on teh trails as long as posible. Teh container iz locatd short distance off da trail 2 minimize bushwackin.

Brin ur own writin utensil an log must be fysically signd 2 claim credit. No excepshuns.

N 42 34.--- W083 21.---

Tree forests covr approximately 17.6 persent ov teh earths surface.

If true use 994 for North.

If false, use 435 for North.

Forests r differentiatd frum woodlandz by teh extent ov canopy coverage. Woodland has moar closd canopy, wif treez spacd closr togethr.

If true use 441 for West.

If false, use 940 for West.

EDIT 05/19/14: NEW FINAL LOCATION: Add 19 to the North and subtract 4 from the West from the coordinates calculated above to get the final location (after you have run them thru the Checker).
EDIT 06/04/16: NEW FINAL LOCATION: Now subtract 18 from both sets of coordinates. This should put you just a few feet off the trail. No need to go past the NT sign. Please camo the cache back so it doesn't disappear.