Engine compartment filled with water. Blew out cylinders but engine still won't turnover. What else do I need to do to fix? Drain crank shaft?

Pete, did you do a complete engine reassembly with out lubricant.
If you did, you could have real problems, especially with crank and rod bearings.
Pistons and rings could be oiled through spark plug holes, 1/2 oz. in each cylinder, take cylinder to bottom of stroke, then give a blast of compressed air to help distribute oil in each cylinder and then rotate engine a few times to complete oil distribution.
To pre oil crank and cam and bearings, you could over fill engine with new oil until you feel it is flooding(above) cam then let soak over night, then rotate crank shaft 20-30 times to distribute oil.
Drain oil, and refill to correct spec's.
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If you have an alloy engine head and the engine got real hot then you may have a cracked engine head or a warped engine head. A compression test would need to be carried out by a mechanic to test and confirm if this damage has occurred.

I am not a mechanic but I have experienced having cars with cracked head, blown head gaskets and recently a cracked block in engine or worn rings (had to replaced last car as engine block damage is expensive to fix)!
Technical theory on engines follows !

If coolant is leaking into one or more cylinders of the engine via a blown head gasket or cracked head or warped head then the spark won't fire and the fuel won't ignite in the cylinder until it cranks over to a different cylinder that has no water in it. On the next engine timed cycle the water would have been forced out of the water filled cylinder and into the exhaust pipe and will come out as steam.

I am sorry about your misfortune. You need to determine what type of fluid it was. If it is coolant it is usually a green or pink. Cooling systems can be pressurized and be tested to find leaks. If it was any other type of leak, proper visual inspection will determine usually where to start.

B1GG0RK1 - 206 TU ENGINE DW8 ENGINE
DRAINING - FILLING - BLEEDING COOLING SYSTEM
1 - SPECIAL TOOLS
[1] filling cylinder (-).0173/2 .
2 - DRAINING
TU ENGINE
DW8 ENGINE
ALL MODELS
Carefully remove the expansion chamber cap .
Unscrew the radiator drain plug (1) .
NOTE : fit a pipe to the outlet to allow clean drainage of the system .
TU ENGINE
DW8 ENGINE
ALL MODELS
Open the bleed screws (2) .
DW8 ENGINE
Drain the engine by removing the plug (3) .
ALL MODELS
3 - FILLING AND BLEEDING THE SYSTEM
Before any re-filling operation, flush the cooling circuit with clean water .
WARNING : check the cooling system for leaks .
DW8 ENGINE
TU ENGINE
ALL MODELS
Fit the filling cylinder [1] to the filler opening .
Open all the bleed screws .
Fill the circuit slowly with coolant .
Close the bleed screws in the order in which the liquid flows without bubbles .
The filling cylinder must be filled to the 1 litre mark to bleed the heater matrix correctly .
Start the engine .
Maintain the engine speed at 1500 to 2000 rpm until the end of the second cooling cycle (fan(s) starting then stopping) keeping the filling cylinder filled to the 1 litre mark .
Stop the engine .
Remove the filling cylinder [1] .
Immediately tighten the plug on the expansion chamber .
If necessary fill up to the level of the maximum mark (Engine cold) .

sounds like a fuel pump fault, gravity is the only thing feeding the engine, then when engine is running the suction is sucking fuel in.

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Sluggish engine turnover can be the battery but won't be caused by gas. A problem related to gas would be more apparent after the engine is running.

Bad crank sensor or main ecm needs repair.

1) you will need to drain the engine oil and refill it before you get it running again, the oil will be contaminated with water + change filter too.
2) you may also have water in the fuel, add a small bottle of methyl hydrate (gas line antifreeze) to your gas tank to neutralize the water.
3) remove your air filter and replace with a fresh dry one.
4) remove all the spark plugs and drape a clean white rag over the plug holes.
5) crank the engine over for about 30 seconds then have a look at the rag - if there are wet spots, there is water in the cylinders. repeat until you no longer get wet spots.
6) leave plugs out for a day for cylinders to dry out, then install fresh new plugs. as long as there is no internal damage, car should start now.
7) change engine oil and filter again to make sure all water is removed.

You have a bad intake or head gasket