why my knees always look so close together in all my pictures... only thing i can think is my bindings are as far out as they will go on both ends and maybe I need to move them in closer?
i noticed this about my riding as well and what helped me was to grab all of my tricks indy to start out. with your hand/arm in between your knees it is literally impossible to have them close together. Once my body got used to this form, i could grab elswhere and kept my form.
Play around with your stance options and let me konw how that goes
nothing to do with the stance. as ben said, get the grab more toward the middle of your board and poke it. looks like it has more to do with form and technique than anything else.
I am by no means an expert, but I notice this in the gym when squating a lot of weight the knees have a tendency to go inwards, which is bad. Try doing body squats concentrating on form and go as low as you can staying on your heels, not leaning forward on the balls of your feet lifting you heels. This will train/build/stretch your muscles properly and may help when you tuck.