Holding canola isn't free. The curve pays about $30/t to wait until May, but every month in the bin costs interest on cash you haven't collected (about $3.40/t at prime+1), plus storage. By May that's about $33/t, more than the carry. The board isn't giving much reason to hold - the basis is another story. There is a potential basis improves as canola drops. Keep an eye out for opportunities there.