You can use two circulars for socks or any tubular knitting. I prefer that method because there's less risk of the yarn falling off the needles.

I have some tricks with stitch markers that make it easier for me to keep track of increases/decreases. But I know what you mean about the difference beween knitting you have to pay attention to and knitting you don't.

As for turning the heel, it does require attention because you have to count. But otherwise it's not hard; the pattern usually includes line by line instructions.