I have in my possesion a rare first edition "South African Underwater Hockey Manual" (1993) edited by Albert Du Toit. It is a fascinating read noting that THE FIRST RULES of the game (1964 - 1979) included;

rule 19 " Any player deliberately seen fouling shall be made to tread water for a given time".

it also has advice on the ideal body form for underwater hockey (pp14)

" This is a definitely a debatable issue as there are many body forms currently experiencing success in UWH. Suffice to say that it appears that a more slender athletic build appears to be in the vast majority in international compeition. Overweight and lack of fiteness generally are found together, so overweight is not recommended for our sport. Agility often supersedes strength (supple body versus muscular body)".

The manual pp27 also advises to avoid taking stimulants like cocaine.

On pp89 they include some stats on unfit players that include a 30sec top and 10 sec bottom time on a 5cycle rotation during a 10min game,. A fit player apparently has a 10 sec recovery only which in the same exercise doubles the bottom time.

Fascinating. Alex you already look like the supple body type!

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Chuck the guide rule