Holding your breath for the length of the pool is quite insane!
But I dun think it is drownproofing. Drownproofing should include
restriction on limbs right?
Anyway in Singapore you cant expect to have this kind of training.
Whenever bad news breaks, the whole island knows. In USA, only
maybe that tiny part of San Diego may ever come to hear of it,
which I am sure majority of the population is accustomed to
that.
And lastly, SEAL students are not conscripted for the Navy SEALs,
they volunteered. So yes, IMHO thats a major point to
consider.
Any ex-divers care to share their insights?