I'm making a Yankee stadium cake for an 8th birthday.
I've never covered a really abnormal shaped cake before...

Should I cover this is sections? or try to do the whole thing in one shot?

Something along this shape:

http://blog.pinkcakebox.com/yankee-stadium-birthday-cake-2009-03-15.htm

But the cake wont be as giant

anyone?
I'm thinking I might just do it in sections

I think you should do it in sections. Since the stadium is already sectioned off, it will be a great way to use the seams as dividing lines instead of looking like it didn't match up.

Here's a stadium cake how to do, I've had in my favourites since 04. It's pretty basic though, not a full out fancy stadium like the stadium in your link. It's in steps aka pages, so a bit of a pain to click each page # to see the next step, but the carving steps at the beginning might be of help.

http://www.bbc.co.uk/berkshire/content/image_galleries/madejski_stadium_cake_gallery.shtml?1

Here's a stadium cake made by twinmom1120 with some hints on how she made it.

http://thestir.cafemom.com/food_party/7969/yankee_stadium_cake_youve_got


And a link to a stadium cake on youtube. There's no talking, just the video of the stadium cake being completed after it was carved and covered in fondant.

http://www.youtube.com/watch?v=FvuF4-GqzKc&feature=related