Link to Bill Spigner’s site added to sidebar

The IBMA’s group has yielded another useful link, that to the site of USBC Gold coach Bill Spigner, who writes “The Pro Approach” column for Bowlers Journal International, with the site archiving the columns as well as earlier pieces for Bowler’s Digest. Being that the columns are instructional in nature, I thought the “Coaching/Tips” category the appropriate one for the link.