all of you who live in farm land and can make swale ditching with hardened non porous materials like clay. you can then plug ditch and fill with water. it slows it is terrible to climb into out of and does not give useable cover. you can add duck weed and fish to make it productive for food. it will increase your local bug due to water but fish help fix it. bubbler to keep it ice free in winter
using bamboo wire and noise makers is a good block/funneling device hard to go through quietly so they move around it and offers no cover only concealment. using 50 gallon plastic drums to plant them in stops them from getting into the soil to grow like a weed/pest. bonus super fast growth and you can harvest bamboo for its many uses.
use of concealed lighting to blind/stun night actions and illuminate them