The listed coordinates will bring you to an unusual object next to a very common one. There's a four-digit number on this object. To find stage 2 and the cache final, you'll need to do a little math.
Take the four numbers and arrange them in sequence as A, B, C, & D.
To find the decimal fraction for the latitude coordinate, solve:
ABC
+ABC
------
EFG
Add 0.EFG to the Stage 1 latitude to get the second stage latitude.
For longitude:
Calculate (B*B) + A + D = H
Take H and add it to ABC to get XYZ
Subtract 0.XYZ from the Stage 1 longitude to get the second stage longitude.
The second stage is a similar object to the one that you found at Stage 1. It also has four numbers on it, J, K, L, & M.
For the latitude of the final, subtract the decimal portion of the Stage 2 latitude from JKLM. Take the resulting number and subtract the digits represented by KLM, then add 3. This will give you the decimal portion of the final latitude coordinate. For the ordinal number of the latitude minutes coordinate take the numbers represented by LM and subtract 1.
For the longitude, take the decimal portion of the Stage 2 longitude and subtract the sum of the digits J+K+L+M. The result is the decimal portion of the longitude of the final hide.
Congrats to (who else??) Flowerman on the original 2-stage FTF.
