Hand knumb, tilt the seat up a little. I start level then tilt to get the weight off my hands. When you move the post up, the seat is to slide foreward on the rails to keep inline with the bb.
The seat nose should line vertical with the bb axle. Also really seats are designed for stuff you dont 'see'. Your bones. I have narrow hips and ride road seats on mtbs for comfort.
I have lightweight, painfull, small racing saddles for road. Big cushy Velo road seats for jumping.
My seat position changes also as to the type of biking I'll be doing that day. If I am to do downhill runs the post will be low, seat-nose up. Commuting, the seats high and level.
>jef.