my best luck has been on the west side of the lake - my buddy and I would park in the neighborhoods over on that side and there are sidewalks/trails from there which lead to the lake. It's nice muddy flats over on that side.
Waneka is one of my favorite lakes that i've fished growing up here in colorado, it used to be great for Perch until the bucket bregade got to them and wiped them out. However the big fish are still in there and if you know how to catch them youll be rewarded. I've only caught one 9lb catfish from there years ago/
Yep, big ones are hitting. Caught a 20 lb. cat Saturday that broke off and flipped back into the water, 10 lb. cat Sunday, and another 20 lb. cat yesterday. Have cell phone pics but they're not the greatest.