Assuming you have a good tent properly seam sealed preferably by factory taping. Please, Please, I'm begging, Please, do not trench. Not only is it totally un-necessary it’s tremendously high impact and if anyone cares in bad form. When selecting a site for your tent consider drainage if you see trenching it’s probably a good sign that this is NOT the place you want to pitch your tent and please fill in the trenching and make it disappear as much as possible. Look carefully at the campsites contour and pitch your tent on the high spot that has the best possible drainage which may not be the best possible view. Then if a tree is above the selected site look for dead limbs that could fall during a wind storm. These are called “widow makers” for a reason. Next if at all possible and it won’t always be due to erosion avoid pitching on tree roots because if a lightning strike were to occur it would follow the tree down and splash out from the roots and your toast. Also if you find yourself in black bear country check the surrounding trees for ripped bark. There always seems to be one tree in a camp site that is easiest to hang your food pack in and once the camp bear gets its free lunch it’ll keep coming back over and over again to the easy tree. You should see some of the trees in my neck of the woods very little bark left at all after many repeated climbs. Lastly if you chose to carry the weight of a ground cloth to prolong floor life fold it in 10” or 12” from the edge of the tents floor. If you let it extend beyond the tent floor you’ve in essence pitched you tent in a bath tub, not good. I use a cheapo space blanket for this I carry it anyway for emergencies. Hope this helps. Mendy