I made an installation tool out of a piece of 3/16 inch diameter brass tubing that I happened to have lying around. I simply baloney sliced one end and fit the baloney sliced end on the brake shoe nub. Insert the tool into the spring then simply pull the spring over the nub.
Brass tubing can be purchased at any hobby store and possibly hardware stores. Maybe a larger diameter tube would be preferable as well. Here is a picture of my 'custom' tool:
Brilliant. To the tubing store I go.
Thanks,
S
Peter Joe