Had a similar conversation with Brian at our October tournament - I’d placed BB’s in at Victory this summer. Our experienced skiers all appreciated the compressible aspect of the dome; some noting how they could be run over with the ski, yet stay in the pass. Others noted getting launched upon striking. IMO it depends on how the ski strikes them. Skiing an easy 13m pass, got cocky at 6BB ended up carving back in hard and early striking with the front of the ski just ahead of the FB. It was on a high edged carve, felt like hitting a brick, blew out the front Achilles. 8 days later, in a post-op splint, driving for my cohort, at 12m he had a huge 2BB, struck the BB on the inside , exploded out of his bindings, blew out his rear Achilles. Sure that’s anecdotal evidence but when the stitches came out, I replaced the BB’s and put back the Turnsofts; they are without doubt safer on our weighted buoy system here at Victory.
When the BB’s were in place, we found their maintenance easy (no fowl issues) and floated them with the top of the cylinder about 1” below the waterline. However, the column of water held by the submerged cylindrical portion of the BB’s gives them much too much inertia so if struck below the water line from the inside (a lateral impact), that impact can be detrimental.