Not permanent but you can get bright blue chalk for refilling carpenter’s chalk string lines... comes in bottles with spouts.
Might even be blue powdered concrete pigment though usually it is in grays, tans and reds. Cut the corner on a bag and deliver the stripe on a bike.
Say it with Krylon!
Is this something you could set up to dispense from a child trailer attached behind a bicycle rather than possibly breaking the law by having a person riding in the back of a pickup truck? Then again I presume its for your own parking lot so it may not be a problem.
Look to your local city maintenance depart. They paint long line at road edges and the center strip lane dividers. Small machine can be handled by one person. Should not be too expensive even though it is city governments. Hardware store should carry them or something similar
You guys sure don’t disappoint. Love all the ideas and especially the Kramer video. Ha! And by the way, for those of your worried about me, I would NEVER do anything illegal, however my friend....she’s nukkin futs!
Also 8 inches by 300 feet is equal to 200 square feet On a porous surface you may want to double to 400 square feet of coverage
IMHO a 5 gallon bucket of blue paint, hanging from a truck tailgate to just a few inches above the pavement would work great. Especially if done at night so driving slow & straight would be possible. One hole in the top, one hole in the bottom, drilled by a friend just before told “good to go”.
The paint would spread a bit after landing.
What you really need is a diversionary crowd of a couple hundred or more. They could all wear BLM sweatshirts (ambiguous). They won’t arrest a whole crowd.
Just keep in mind that if any equipment is rented there will be a paper trail.
Keep I’m mind that there may be a certain amount of liability in applying anything to a road surface that may affect traction.
What you really need is invisible paint, that either transforms with water of in UV light.
https://wildfirelighting.com/product/wildfire-invisible-clear-colors/
But don’t do it, don’t even think of it.
You could probably get a pump up agricultural sprayer at Rural King or Tractor Supply for around $20 They range from 1 to 2 gal and have an adjustable spray pattern. Leave a decent air pocket above the paint so it keeps spraying consistently. (If you fill it with paint and only leave a little air in it when you pump it up it will lose pressure too quickly and have to be pumped back up to finish).
You could probably get a pump up agricultural sprayer at Rural King or Tractor Supply for around $20 They range from 1 to 2 gal and have an adjustable spray pattern. Leave a decent air pocket above the paint so it keeps spraying consistently. (If you fill it with paint and only leave a little air in it when you pump it up it will lose pressure too quickly and have to be pumped back up to finish).
Generator. spray pain rig that fits over the side of 5 gal buckets of paint, two five gallon buckets of paint. Pole to attach the spray head to and rig up a way to pull the trigger. have someone else drive the truck at about five miles per hour.
Pretty simple.
You could even lay on the bed of the truck with your arm over the back and do it. just drive the truck straight and at a constant rate and have the spray head close enough to the road to get the width of stripe you want.
This sounds hugh and series.
Is she “farming” this part of the job out?
That sounds like conspiracy to me, if you are painting a public way—which is probably against the law.
Just trying to keep you out of jail for the weekend.
BLM = Blue Lines Matter
You could get more time to do your painting if you call the police in your town and tell them that you saw Kate Upton walking around nude on the other side of town.
On second thought you might cause a traffic jam and multiple collisions so scratch that.