Preston Harper has this month's ad in Lowcard doing a switch boardslide down a curved rail in New Jersey. Here's a little video of that trick and some more skating from that day. Filmed and edited by Dylan Holderness.Cast: ERGOTags: preston, harper, ergo, send, help, send help, clothing, new jersey, skate, skateboarding, skateboard, board, switch, boardslide and switch board slide