Thanks Dave.

My research over the past two days tells me that 1) don't use a boat halyard as 
these ascenders eat throught the outer rope (Of course, I don't think anyone 
goes up their mast often enough to make that truly a problem) and 2) the frog 
system uses less parts (so less expensive) than the ropewalker/ATN but uses 
more effort than the ropewalker.

Frog system is $210 at GGG and $177 (minus harness, about $50) at Kartsports.  
I haven't checked REI yet (physical store is not very close) or Moosejaw 
(physical store is 5 miles away).

Bob

-------------- Original message -------------- 
From: "David Shaddock" <[EMAIL PROTECTED]> 

Bob, here’s an excerpt from a Cruising World post that describes a 
home-assembled Frog system.  By the way, the ATN is definitely the GGG’s 
Ropewalker system, but people say it’s built of inferior materials at a higher 
price (although it includes a hard board chair).  Some suggest just going to a 
local climbing studio and buying a couple of Petzl ascenders and building your 
own—which could be done for either a Ropewalker or a Frog system.  Myself?  I 
prefer the Frog—you use both legs at once and you’re always balanced.  
 
Excerpt below:
 
My son is a mountain climber and gave me 2 Gibb ratchets. They are like a cam 
cleat (but obviously safer and a bit more sophisticated). They cost $40 apiece. 

The first thing you do is attach the main halyard to the base of the mast and 
tighten it bar-hard. Attach the 2 cleats to the halyard, one lower than the 
other. Attached to the top cleat is a climbing harness or bosun's chair. 
Attached to the lower cleat is line with 2 foot-loops. 

Operation:
STEP 1 - You simply sit on the bosun's chair and slide the lower cleat up until 
it hits the bottom of the upper cleat. This can be done because there is no 
weight on the foot straps.
STEP 2 - stand up (which takes weight off the bosun's chair) and slide the 
upper cleat up the halyard.
STEP 3 - repeat STEP 1. 

I have a 62-foot mast and go up and down it easily to spray my sail-track, 
inspect shrouds, or do other maintenance. They can be purchased at REI or any 
mountain shop. 

... 

The gibb ascender is "cleat-like". One end of the cleat is a jaw and the other 
end is a lever. When you want to come down you lift the lever which withdraws 
the jaw. This can only be done when there is no load on that particular 
ascender. If the ascender is loaded (weight on) then it is "impossible" to lift 
the lever. I use 2 ascenders, my harness is attached to the top one and a 
"texas tee" foot strap is attached to the lower ascender. Advice from Al Hatch 
says to run a safety strap from the harness to the lower ascender also.
 
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of 
[EMAIL PROTECTED]
Sent: Tuesday, August 19, 2008 12:29 PM
To: [email protected]
Subject: catalina27-talk: bosun's chair alternative
 
I have ordered a petzl-corax climing harness to replace my (recalled) buson's 
chair.
Apparently some of you are knowledgable about climbing. How does the GGG (Gonzo 
Guano Gear) Frog system compare to Petzl Frog Ascending system, the rope 
walking system and ATN Topclimber?
I suspect the Topclimber is the marine version of the rope walking system, but 
don't know.
The ATN Topclimber is about $324, the Petzl Frog System is $177.50 at 
kartsports.com (but needs a harness, which I now have).
Bob Mann

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