Does anyone use this? I've had one of the orange (not the yellow "Emergency" marked) ones for several years.
Could you tell me if this is a closed, semi-closed, open marker? Semi-closed duckbill (one-way baffle) with an OPV. It won't spill, even when used as an emergency floatation noodle.
Is it inflated by the power inflator? No - there is no LP nipple.
Can it be inflated with a 2nd stage or orally? I use a second stage. Boyle's Law allows for oral inflation at depth, but there is no nipple and on the surface it would be a PITA.
Also, how small is it when it is folded up - will it fit in the Halcyon BP pak? It's small enough, but it's a heavy fabric and the OPV is a lump and deployment from the BP pack is not good - save that space for a camelbak. I roll mine and either bungee it to the side of my backplate or slip it in a pouch with a small spool and a double-ender and hang that from my backplate.
The 90# is too big - if you need that much surface marking it would be better to carry a dye pack or two and a smaller SMB. The 50# works well for OW hangs as well as emergency beacon/flotation duties and allows for me to pay attention to things other than maintaining adequate tension on my line. Poor skills, perhaps, but there you have it.
Steven