Jumpin' Jacks

Roger sent me this note about the jack discussion going on in the mailing list. (Sorry, Roger, I edited a bit, and include only 3 of the pix you sent me here):

I have a copy of a diagram on how to use jacks (for '58’s, I think) – I’ll try and find and post here as well.

…and here’s the diagram. Don’t forget to click on the picture to see it full size…

does anyone see the shoe or hook in that picture?