I don't recall noticing any carp in Palmer at any time I've fished there. Its been quite a few years though. I have caught S/L bass, trout, kokanee and crappie all in the same day, many on the same lure, shad rap in walleye color. Topwaters and spinnerbaits also caught plenty of bass. Late March seems kinda early for good action on the lake to me. We've always done good later in the spring when the water gets above 55° and always from a boat. Fun lake to fish though, I need to get back there! Good luck!