Ian, I have another technical question. How is the Bangladeshi boys use of the wrist and fingers at the point of delivery to get nip of the wicket? I remember reading a book on Boimechanics a while ago, that claimed, the difference between county standard pace and international standard pace bowlers is the use finger flex. I will try to find the source of the book asap.
On a personal point of view, your book is great, I have followed some of your guidance, about swing bowling and now able to control the outswing and inswing at will in addition to being more accurate; the chest drive is something that I wasn't doing properly before. Thanks