I use the straw method for potatoes too, although I have to lay mesh fencing over the straw to keep it from blowing away. The potatoes still managed to bury themselves just deep enough that my heavy clay soil made them hard to get to.
I’m hoping that eventually I’ll get enough organic matter and biochar worked into the soil that it won’t solidify as much. We’ll see. My biochar-making system is being expanded this year, so I should have some decent amounts of it soon.
A pain. Still, Hard to dig beats no potatoes which is what I had. I can see the bio char breaking up the surface. Maybe till in some spoiled hay or straw first? Diana uses No Till Ruth Stout methods I think? Are you using that?