Hook 'N Moor is the trademark of a Swedish company. Mine is telescoping and goes to I guess 2 meters.
I can't really recommend it. It did work
when it was new, and the design is clever. But it works with recirculating Torlon balls, which start to stick and jam very soon after the new wears off. I will try to revive mine with dry lube, but this is a serious fault, and in general, the design of the system is flawed in that it does not take proper account of the propensity for the balls to stick.
The usefulness of this device is for getting a rope
through the top loop of a mooring
ball which lacks a strop, or Baltic
style ring cleats
. There is really no use for it in UK waters as normal horn cleats
are universal (and the Hook 'N Moor won't grab those), and mooring
balls all have strops.
Mine stopped working about a year ago, and although I spent four months in the Baltic
this year, I never got around to trying to revive it. Baltic style bows-to mooring is pretty much impossible on a boat
the size of mine without someone on the pier to take at least the first bow line, so the Hook 'N Moor doesn't really solve that problem (it might, however, on boats with less freeboard at the bow, than mine does).
On top of everything else, it's horrendously expensive.