And this might be a suitable point to repeat advice I've seen elsewhere -
when rescuing a boat, i.e. deep water rescue, lift the heavier end first.
By
heavier in this context I mean the end which floats lowest. It's harder to
do initially, but as it usually results from one end of the boat having
airbags, then the water will run from the end being lifted, and cannot run
into the other end. Thus the second part of the lift, onto your boat,
becomes much easier.

If you lift the airbagged end first, you then end up with the far end of
the
boat full of water, and it's very hard to get it past the balance point.

On my CST (and subsequent rivers I've had to pull boats filled with water)
It's easier to empty by lifting the side first then swing it over your deck.
this reduces the lever effect the submerged boat has or yours and reduces
the amount of stress you put your body under. alternatively if it's
difficult to get the boat and swimmer out of the water on the bank then get
them to drag their boat across your deck for you by using their legs on the
hull of your boat then get them to hang on the end of the boat which will
begin to empty, making it easy for you to finish it off and the swimmer has
started to be warmed up again, takes their mind off of swimming.

Mike