To save one's arms, the trail is often reduced. The trail (distance A to B) depends on the angle of the steeringhead (C) and the place of the front wheel axle (X). Because the angle is hard to change, the front wheel relocation is more common.
There are several solutions from home-made to hightech. Watch the pics and enjoy yourself, especially with the creative home made forks.
Click on the photo's to enlarge.
These forks are the originally V-Max forks. But the forks are placed forwards with the two massive (airplane-)aluminium plates.
This leading fork places the wheel a forwards to reduce the trail.
There are two hole's to select two trail settings. Manufactured by EZS (The Netherlands)
This front end belongs to a Yamaha Virago. It is a very nice solution. You can clearly see that the wheel has moved forwards. The stock forks are still used.
These massive forks are used to reduce the trail when you don't want to change the bike's look too much. Manufactured by EZS (The Netherlands)
A homemade version with the originally front forks together with a kind of rear end swingarm construction.
A mono shock type, homemade.
A solution for Gold Wings from Champion Sidecars (USA) This changes the angle of the forks with 6 degrees, that results in 56% reduced trail.
A leading link from Unit Sidecars (UK). Here are the brake calipers mounted under the swingarm. When you use the front brake the front end will lift up a bit.
A leading link from EML (The Netherlands) called Extensodive, also used on their Goldwing GL1500 Trike Bermuda.