SC - Scotch Eggs

[Seton1355 at aol.com]

Hi Everyone,
I am going to make Scotch Eggs for Friday.  I've read the recipe but never 
actually made them before.  Some advice please.

1.   Wrapping a 5-6 minute egg in ground beef / turkey sausage....
How hard boiled is the egg at that point?  Wouldn't it just gush out, OR do 
you just wrap very carfully & gingerly?

2.How thick a coating of ground sausage do you give each egg?

3 Is another name for Scotch Eggs:  "hedgehogs"?