What's wrong with being at level -1 given the image?
What about the 'bad guys' on the other side of that bocage?
What is the 'other side' of Crest?
The Bocage rules are based on the concept of Wall and Wall Advantage. It is prudent to keep close to it.
Even the Woods/Path +2TEM approach it not optimal for that reason. But at least, it keeps different Levels out that do not reflect the terrain - which is more akin to walls rather than gullies.
Maybe, one should extend the Woods/Path +2TEM approach by the following:
Units ADJACENT to but not in a Double-Bocage hex can claim WA over a hexside between the two.
That way, they could deny enemy units IN such a hex any TEM and get it themselves (just as per the regular WA mechanics) but still cannot see beyond that hex.
This would still leave out the question what happens, if opposing units claim WA over different sides of the same hex. The effect should likely be that they could - only in this case - see each other and fire at each other with +2TEM.
All that said, any rules for Double-Bocage should be kept very simple and as close to the stardard Bocage Concept as possible.
Yet another way to reflect Double-Bocage:
Use Road hex with Hedges on both sides for Double-Bocage which allow the passage of vehicles (i.e. no change from the original here). Introduce a new symbology for Double-Bocage hexes along this line: Bocage on both sides, Path in the middle, and "something new" replacing the OG artwork in the hex.
von Marwitz