To enter from backwards crossovers: If for example you are doing a spread eagle in the clockwise direction you would do backward crossovers, place your weight on your left foot, lift your right foot off the ice, bring it around until you place it forwards on the ice while your left leg continues to go backwards. Does that make sense?
Shoulder width is a good distance for your legs to be apart!
Here is a collection of some spread eagles and ina bauers. The spread eagles are entered from backwards crossovers so you can see my explanation in action!
http://www.youtube.com/watch?v=xBeW488t4io
Yes, exactly. To keep your feet from spreading farther than shoulder width apart, you'll have to really feel like you're pulling not only your heels together, but the insides of your upper thighs together. I'd also like to add two words of caution (from experience, LOL!) before you try your spread eagle from back crossovers:
(1) Make sure you stretch to open your hips first (I do the plie exercise against the boards). Otherwise, your leading foot may not open out enough when you place it down forward and you can catch and edge. It can be rather unnerving.
(2) Assuming a clockwise (right foot front) spread eagle, really hold that left back outside edge as you finish your crossovers. Look over your leading (right) shoulder and open out your right arm and right foot to face the direction of travel before placing that right foot down. Rushing your step forward and failing to "aim" your foot properly before stepping can also result in catching your blade.
You're right...spread eagle & Ina Bauer aren't required elements for tests, certainly not now.
But "open hip" type flexibility, being able to stand in a relaxed second position, open, with hips and shoulders squared and no strain upon the knees, that certainly does help when doing essential moves like
Pivots (which I see again in basic skills tests)
Spirals/camel spins
leaning or layback spins
even the gliding edge, step into a waltz jump or axel
From what I hear from closed-hipped friends, one of the toughest moves is an outside-to-outside mohawk, like the LFO-RBO and RFO-LBO mohawks on the 8-step mohawk pattern. The less open your hips, the more you need to work your lean and your shoulder positions.
But I have seen lots of amazing full-split spirals and great camel and layback spins from girls with extremely closed hips, so I'm not sure those are such an issue. In fact, one teenage girl I know who fits that description has such closed hips that she can do a pigeon-toed spread eagle (toe-to-toe, 180 degrees!). Also, both of my coaches have always had closed hips (neither has ever managed to do an outside spread eagle or ina bauer) but were Olympic skaters with great double axels. If anything, I have had to be careful not to turn my foot out as I step out from my RBO edge to my LFO axel takeoff edge. Closed hips would make it easier to push straight out of the circle rather than onto the same circle (a big no-no).