I feel that there is a real need for a different type of fender for the river - particularly relating to passages through locks.
When entering a lock heading downstream, there is only a few inches of lockside to 'park' against and it's almost impossible to get fenders to protect adequately as, if they are low enough they drag in the water and they ride up over the locksides negating their intended purpose !
Sausage fenders hung vertically don't help much until the level starts falling and there is a foot or so of lockside to fend against.
