walleye fishing in April?

[Fishing Dude]

Hi all,
I am new to this forum. We have a charter set up for April 8 & 9 of this year. We have never fished Lake Erie before and have some concerns.

What can we typically expect as far as weather, fishing and lake conditions?

Number one thing is to dress for water temp, it ay be a 70 deg day but the water temp will be in the 40's. Better to dress warmer than needed, otherwise might not be a good time when fighting the chills.