Greenlick Advice

I am thinking of heading to Greenlick tomorrow to map the lake. I am thinking I may be trolling a few things while going up and down and back and forth. If anyone could suggest anything to try it would be greatly appreciated as I am not a troller myself. I actually just threw a crawler harness for the first time this past weekend. I may stop a few times if I see any schools as well. I am not really familiar with Greenlick but would like to get a decent map for Ice Fishing. Thanks in advance.