#1 squirt a little soap in the pool as it will break the surface tension of the water, drowning all the mosquitos hanging under the surface.

#11 They likely won't use it after the first few months.

#1 Buy some Mosquito dunks. Toss one in spring and you turn from a skeeter breeding ground into a neighborhood skeeter kill station. Based on a bacterium that kills sketter larvae, Safe for humans pets wildlife etc.