Constantly amazes me how tough the underbrush can become. After a couple months of on-and-off use, my 'mini brush hog' blade bit the dust. I ordered and already received a new blade. I'm trying to be a bit more gentle with this one ... mostly just letting the blade do the work instead of trying to mash it through the undergrowth!
I have also used the 'grooming' blade on the new trail on the hillside. It works fairly well, though nothing too special. The best part of using that blade is that it doesn't dig into the dirt as consistently and often as the 'brush hog' blade. And even though it won't cut through any but small roots, it tends to move more dirt than the brush hog blade (which tends to churn the dirt, more than displace it).
Still, I have mulched quite a bit of the angry undergrowth! These pictures show an area just above and behind the house. Even though it is fairly well scalped, there is an entire maze of Salmonberry roots criss-crossing everywhere.
I've dug out some of the stumps using the flat blade of a pick-axe, when they were right in line with the row of seedlings we were transplanting. Does help a little, but we are constantly lifting four to eight foot long roots (rhizomes?) cutting across the planting holes. Tedious.
Here are a few pictures of some of the transplanted tea seedlings. They were started from seed in 'conetainers' and then transplanted into the 'Deeppots' shown below. The Deeppots are about ten inches deep by about three inches in diameter.