Visual Jumps

Do you do visual jumps?

  • Often

    Votes: 4 5.3%
  • Sometimes

    Votes: 19 25.3%
  • Used to

    Votes: 2 2.7%
  • Never

    Votes: 50 66.7%

  • Total voters
    75

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Does it matter??

Not in the context of the OP. It's a good drill, since seeing (or not seeing in this case) is believing for some

I'm just curious what distance it is, since 50% of people fail at the lost line drill
 
Not in the context of the OP. It's a good drill, since seeing (or not seeing in this case) is believing for some

I'm just curious what distance it is, since 50% of people fail at the lost line drill

Really? 50% fail lost line drill?
 
I have done one.

In the Chamber of the Ancients, in downstream Carwash, you run a long primary reel in to the mainline. That mainline forms a small circuit, and the two ends of the line are about four feet apart, and easily seen at the same time. When I did the circuit and got to the end, I was facing my own reel, tied into the other end of the line. I could literally have put my knees on the end of my line, and my hands on my reel. Rather than go back all the way around, we went forward and picked up our reel and left. I suppose that a sudden total siltout might have caused problems at that point, but I had three lines (both ends of the mainline and my own reel) within six feet of me, and you'd have to work very hard to silt out the entirety of the chamber.

Other than that one occasion, I do not do visual jumps and I marked all intersections . . . unless I'm narced (right, Rob?).
 
Really? 50% fail lost line drill?

That's how I read this:

...one of the drills I put my full cave students through is a mock visual jump in which when they return to it visibility is blown out and they have to find the main line. About 1/2 don't find it
 
I don't do visual jumps. Considering I only get to cave dive about one week a year, I figure I need all the practice at running jump lines I can get ...

... Bob (Grateful Diver)
 
That's how I read this:

I think Dive-aholic is getting students to go from one line to another in a silt out? Which is different to how I did lost line. Just had to find the line I had been on.
 
Just to clarify, you make them take a fake visual jump, silt out the return path, with the fake visual jump, and say, FIND THAT FING LINE SON IN THE SILT. They then deploy lost line drill and 50% fail to make the jump.
 
Does anyone see a difference between jumping back onto gold line to close a circuit, like TSandM did, and visually jumping to start on a tunnel?

Visually jumping back onto a continuous line vs jumping onto a line where you might have to turn around and not have a continuous line.

In other words, it seems possible to make a visual jump while maintaining a continuous line to the exit. As dangerous or less?

I do not condone anyone making visual jumps.
 
http://cavediveflorida.com/Rum_House.htm

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