Hardly noticeable? Right..
It seems like A TON of work and money that MIGHT help the problem. I think the people that do go tear up the other fields/hills that they shouldn't be on, are just going to drive over these posts anyway.
Tyler hit the nail on the head. The ignoramous, or otherwise just destructive and disrespectful A-holes that drive where ever they want anyways will go around/over those post stubs. All those effectively get done is waste precious time and money into a new obstacle for the 1% of guys who just don't give a sh!t that they're there.. and there for a purpose. All it takes is one set of tracks to ruin it for everyone..
I was coming down Butterfield Canyon on Saturday.. Holy sh!t, their method to curb illegal routes are giant concrete barriers that you see dividing highways.. Unreal.. It looked absolutely horrible.
I'll add that I don't like seeing this added crap to a trail to keep the 1% on the trail.. Instead of going through with a massive plan that is short of bulldozing and paving a road, I say increase LEO presence, and fine the living hell out of these offenders. Slap enough people really hard with tall fines, and the word will spread real fast about screwing around off trail.. You can get your equipment confiscated for poaching, or other hunting related crimes.. Why not confiscate the truck, buggy, atv, bike, RV, etc of those found blatantly destroying the land? Easier said than done, yes, but I'll avoid a trail with stumps every 4 feet to remind me where to go.. That'd feel like a grown up Autotopia ride at Disneyland.. No thanks..