Hi All! new to this grape growing, I've got old vines that's been neglected for years and have a row of pine trees right next to them. Problems are grape bunches sparse and ripen at size of a pea. I want to cut down all the pines so the grapes will get full sun and I'm going to outline trellis with landscape timbers and fill with quality compost to fertilize and keep weeds down. Will this help or am I doing it all wrong. Your advice greatly appreciated. By the way I have purple grapes (Concorde) I think.