Strangely these sites never have the most useful knots. Most prominently the "recursive slipknot", where you secure a slipknot with a slipknot until it feels se

Strangely these sites never have the most useful knots. Most prominently the "recursive slipknot", where you secure a slipknot with a slipknot until it feels secure. And the other one is "reverse-8". First you make a single eight and the you track the eight with another rope but from opposite end. Mountaineers seem to extend their ropes with this, because the knot is still easy to open. Third one is the "reindeer-knot" suitable for frozen leather, but I cannot describe it easily.