XS-NRG, I spoke only from my own experience and from my experience with students and with mentoring. There is no question that it is quite possible to go into a feet-up position in a dry suit and remain entirely stable. (I spent an entire dive with Uncle Pug, trying to learn how to swim in that position!) But if you get feet up because you're overly buoyant and trying to swim down, you may manage it, or, especially if you are using TurboSoles or attached boots, you may kick your feet out of your footgear and be rendered helpless.
I still think the advice to a new dry suit diver to get those floaty feet DOWN is good advice. You can fine tune it as you get better, but having ridden a couple of students to the surface when their dry suits got away from them, I'd rather see some silt.
I still think the advice to a new dry suit diver to get those floaty feet DOWN is good advice. You can fine tune it as you get better, but having ridden a couple of students to the surface when their dry suits got away from them, I'd rather see some silt.