5 vs 5 means also that every player has its own sub, and there would be no more problems in that department. As for your proposition Tuck, I generally agree with you - e.g. if a player touches the side of the pool, or is clearly trying to sub, then the sub should be allowed to enter the field, if the first player continues to exit fully. Why? Because that player in the process of subbing is already out of the game, and that extra time of fully exiting is nothing but "legality" point of triggering the deck refs punishment, while the team subbing is for some short, but perhaps important time, without one or more players. Rules regarding subbing should be liberal, with punishment comming only if there is clearly one player missing from the sub bench area.

I always get a smile on my face, when reff comes to us before the game, and explain that he will take great care to check if our fins are fully outside the water... :-)

Now please everyone, dont get monkey on me again, these are just my thoughts... nothing that we say here will change the rule book, thats for sure. Rule changes are slower to come than evolution of the dinosaur... and for the record - thats bad!