Offroad parks typically require offroad vehicles with safety belts to have an offroad flag/whip attached to the front of the vehicle but the question is how?

Rago Fabrication has a clevis mount you could use if that is available

Pretty simple install and run yea around $60

Another option is if you have a bullbar on your front bumper you could utilize something like this from Nilight

This is also a very easy install and runs only about $14

On the 5thgen 4Runner with the c4 Front Bumper.. the Rago Fabrication mount to clevis does not work. You could get the mount to connect (even though super tight fit) but the whip would be pointing almost straight out instead of straight vertical. Just not good.

Haven't tried the bullbar attachment yet.

A third option is getting some flatbar from Home Depot, some tractor implement paint and some gas pipe insulation (1/2") and mounting this flatbar somehow. I ordered the materials today and should get by Thursday. Cutting it close since my first event I need this flag is on Saturday.

This will work