Those soaker hoses work really well if you have water pressure to push the water out of the hose. I would imagine that you're using well water for the garden, so pressure isn't a problem. With a rain water gravity system like mine, there's not enough water pressure to push the water through the porosity of the soaker hoses.
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Just thought if chime in that some drip drip systems need only 2 or even 1 psi, that's about 2-4 feet elevatin needed. We have used drip emitters on 1/2" poly tube with success on our system where the cistern only has about 5 feet of height on gardens.
My current system uses 1/2 inch PVC water pipe with a 1/16th inch hole drilled in it every 6 inches in a straight line. It works well with gravity feed, but the pipes need to be fairly level or the water all goes to the low end of the pipe... :-)
I wondered about pvc pipe... even with the soaker we get uneven distribution but I took a wide diameter needle to the low end where each plant is and that has solved the problem for now. It’s probably not a forever fix but should help to keep things watered as they should be until we get our ideal system going.
That's actually a pretty good idea for spots on the hose where it's not putting out much water.