The ones with 3 legs are the sturdiest, but the bulkiest to carry around. I have 2 sets and rarely hunt without one of them.
These use shock corded poles and break down into a very compact package. These almost always are in my pack
https://www.walmart.com/ip/Hammers-S...Rest/142973840
I have another set similar to this, not the exact brand. They are heavier duty, and bulkier to carry, but depending on the situation I use them at times. They can also serve double duty as a walking stick.
https://www.amazon.com/Primos-Pole-6...hooting+sticks
The single pole versions don't help me at all, but with practice I can shoot pretty well with either of these. Not quite as good as off a bench, but much better than anything else. But it does take practice.