Home-brew field work guidelines

We are getting ready to do some fieldwork in PNW Cascade foothill forest (think Tiger Mt. and similar).
I have prepared a contour+some trails map.

We will try to split the fieldwork; we are not qualified mappers; the end result is a "race-able" map.
This is the process description:

1. I will visit the area before hand and try to leave reference markers. Hopefully GPS coverage will be good.
1. Thus I will have exact reference points on the map
2. I will distribute the area by giving a proposed trajectory to those participating.
3. I will print out the maps in twice the scale of the final version (e.g. 1:10000 will be printed as 1:5000)
4. Information gathering protocol:
1. GPS is always on
1. I have means of putting GPS trace on the map very easily.
2. When on field, follow route on map and add features to it
1. Use 3 colors 
1. Use 2 usually, use third sometimes. 
2. more colors is messy and takes too much time
2. Vegetation is encoded by the following number scheme:
1. 0 - open forest (corresponds white map)
2. 0-1 - open forest, bad undergrowth (white map, sparse green stripes)
3. 0-2 - open forest, very bad undergrowth (white map close together green stripes)
4. 1-, 2-, 3- correspond to different runnability of forest. 
1. 3 is reserved for blackberries and places you would never go yourself. 
2. 1- and 2- are somewhere in between
3. 1- and 2- can be combined with the undergrowth symbol. 3 cannot
4. In PNW forest 1- and 2- can happen with fallen trees or smaller trees.
5. -1 and -2 describe the usual undergrowth in different forms of baddness. 
6. 2-0 is most likely to be used (and not 2-1). 2-2 is 3, 2-2 is not. 
7. 1-0, 2-0 is very unlikely either, there is always some undergrowth
8. 2-1 and 2-2 is questionable. 
5. So the most common are:
1. 0, 0-1, 0-2, 1-0, 1-1,1-2, 2, 3
6. Please write them down as 0-2 or 0/2 
3. Pointwise features shall be kept as numbers that start with 10 and a list of the features on some side paper. 
4. Linear features:
1. Distinct vegetation boundaries shall be kept with dotted line with first color
2. Trails will be drawn as on map with first color
3. Water features will be drawn with second color
4. Contour line changes (hopefully not to be done), with third color. 
5. Area features:
1. mark a region and add an explanation in the features list. 

This is a document in making and I expect changes as we go along.