What exactly is this. How does it differ from a "D" style Hill bow ?
A string follow bow is a type of Hill style bow. The limbs have a slight arch towards the belly (i.e. towards the archer). It is a very forgiving style of bow and Howard stated that all other things being equal, a string follow bow would be most accurate. Most straight limbed laminated Hill style bows will pick up a little string follow (those I have built all did) and some bowyers purposely build it into the bow (e.g. Northern Mist).
There might be a picture of Northern Mist Shelton on his site,that is a string follow bow.There is a few others too,HH will make a string follow,Miller,Sunset Hill has string follow bows also.
FD,
There is a forum post just down the page titled "How much string follow?" and it has several photos. The last photo shows the string follow bow on the left. Here is the link:
http://tradgang.com/noncgi/ultimatebb.php?ubb=get_topic;f=1;t=093778
I have two string follow bows by David Miller Longbow and a glass bow with backset. It is hard to compare them because they are different lengths and weights. One all bamboo is straight and developed a little string follow. The concave-convex all bamboo has a backing and was built with more string follow. The second is faster, almost like a glass bow. Both are smooth, quiet and accurate. The weights are different on all three. The glass is as fast as any longbow, smooth, quiet, and accurate but feels different. I was told he liked the all bamboo, or yew, but recognized the greater speed and durability of the glass bows. You can see pictures on his website, and pictures of bows owned by Hill on a link, by going to his website and then to Contact. The two Hill bows are part of John Lee's collection.