[RanAweigh]

You have mentioned two issues. The first is the ice in the bilge. As long as you don't try to run your bilge pump before it has completely thawed out and all the ice has melted it will most likely be just fine.

The other issue is where did the water come from? Because you are on the hard its a pretty safe bet the water came from somewhere above the waterline. Without knowing how your boat is covered for the winter it anyone's guess. When you get your next thaw some water intrusion "CSI" could be in order. Take a trip to your boat, see where the damp spots are and apply some "sleuthing".

Oh yeah, make sure the bilge pump is not connected to power. It could eat the impeller if it tries to start.

The good news is it won't sink

 

[RanAweigh]

Elixir of time is a great medicine here. Unless there is so much ice in the boat it is in danger of falling over there is no rush. Let the boat thaw. Don't try to pump. Don't try to chip the ice. If its really getting to you, as ScottyT suggests you can bring a heater to the boat to speed things along.