Wow, there have been some great posts...

I was on my knees, leaning into DH who was sitting.

My midwife massaged and stretched the opening when I was in 2nd stage, and held the head back a little bit. I was a bit tentative to begin with when pushing, but then really started to get the hang of it, and I think I could have done some damage if my midwife hadn't helped me so much.

Water is supposed to be amazing, but bare in mind, the midwives can't see what's happening so well - so if you want that guidance on when to pant etc, I would go landwise.

Good luck with it. Tearing was my biggest fear in labour, but I only grazed (because darling DD had her hands up in her mouth when she was born!!)