Joe:You attach the bosun's chair to the top ascender... with one carabiner, and a couple of webbing foot loops to the bottom.... REI will make the foot loops for you.... You don't need a harness... you have the bosun's chair. You'll still have to purchase the static line, I don't think that's included with the Topclimber rig...... but........ whatever you do.... good luck.
You are explaining well. Again many thanks. Shouldn't be the mystery I am making it out to be. Will continue to evaluate. I will report back with my device decision and describe the ascension experience.
If you open the ATN Mastclimber video link ...
http://www.atninc.com/atn-mastclimbe...quipment.shtml
... a traditional type static line is not needed for this device. A halyard is tied off to the toe rail or cleat and winched tight from the other end. This becomes the ascending line.
Further and as mentioned before, my thought if I go this route is that I will parallel the ascending line with another halyard onto which I'll do a Prusik knot also tied to the bosun's chair attach point. This will be the safety backup if I elect not to use a well meaning but doesn't quite get it person (which I regret that many are) to attend to a winch.