It's worth noting that anglers have several other options available for descending devices that have been available for a while. Sheldon's Fish Descender  is very similar to what was described here. Ace Calloway , and Seaqualizer are also good options-- the latter automatically releases fish at preset depths

The ability of rockfish to recover after re-compression is supported by a growing body of scientific literature.  One of the most important factors determining whether a fish will survive is how quickly they are released back into the water, and not how they look externally. See:

"Recovery potential of black rockfish, Sebastes melanops,  recompressed following barotrauma" A.L. Pribyl  et al. (2012)

"The effects of barotrauma on the catch-and release survival of southern California nearshore and shelf rockfish (Scorpaenidae, Sebastes spp.)" Jarvis and Lowe (2008)

"Behavior of Nine Species of Pacific Rockfish after Hook-and-Line
Capture, Recompression, and Release" Hannah 2007