Whole frames are made around having the fork raked backwards, (and smaller wheel) , they were called Stayers , and used in Motorpaced Racing , on The Velodrome .

IE, Following in the slipstream of someone on a motorbike.
pix http://4.bp.blogspot.com/_oIsCw57t7L...iss-stayer.jpg
http://farm4.staticflickr.com/3038/2...3a55680b11.jpg


http://farm3.static.flickr.com/2175/...c156ed74_m.jpg

http://www.classiclightweights.co.uk...te-stayer1.JPG

http://www.pezcyclingnews.com/photos...lesch-koga.jpg



one application for Beneficial Low trail front geometry ... is when There Is a heavy load on the front wheel .. Porteur rack Bikes .

in such a situation turning the wheel , over the center, involves Lifting the load .. with less trail that is less ..

Have 2 small Wheel Folding Bikes, both are Low Trail, both handle steadier with a load on the front.