Mid April in my opinion is a little early to be running spoons. Spoons are typically run at 2 mph plus. You can run them behind snap weights but generally your going to want to run them behind jet divers, dipsys and tru trips. What your running your spoons behind does effect the bite. It can be somewhat difficult to run spoons and harnesses together at the same time because the effective speed for each bait is different. If you're going to be here in mid April I would put most of my effort into harnesses and your reef runner type crankbaits. As far as depth, you'll just have to figure that out as the day goes on. I would suspect that the active fish will be up high in the water column, but you never know.