I've never used 1/4 oz for crappie or even bass when it comes to ballhead jigs. 1/16 oz is usually heavy enough along with the weight of the plastic lure. As important is hook size. Generally I find the best lure action when the hook comes at 1/3 of the lure's front end. Any further back and the body action is shot. Some anglers figure if the tail action is fine, no problem, but lure action isn't only in the tail. I'll go to a #8 hook for really short lures and go up to #2 hook for larger baits. A variety of hook sizes can be found for most ball head jigs and the only place I've found them is on EBAY.