Hi Zoë!
Irrigation is my biggest woe it seems--sorry, I don't have good answers. Maybe someday I'll get it figured out, but, as of now, I'm still trying different methods with variable successes and failures.
Here's what I can tell you from my experience--I really like the idea of drip/soaker--in theory a person should be able to hide the water delivery method from view, deliver the water right where it needs to go, and set it and forget it.
But it doesn't work like that for me. I have such dirty irrigation water that it clogs soaker hoses instantly and drips almost as fast; with filters I can get a week or two. Not worth it for me.
With sandy soil, also consider that the water won't spread out from the source much at all before it heads down to wherever it goes...
