I found a cross between kneeling and all fours worked well for me. With pg2 I had painful bh so I practised positions during them to see what was relatively comfortable. That worked every time. I had a 3 hour labour and spent it in that position. THe mw said as soon as she saw me in that position she knew I'd get by without pain relief (which as just as well as I didn't have time for pain relief).