There are six hookers in the running - England's Lee Mears, the Irish pair of Jerry Flannery and Rory Best, Scotland's Ross Ford and the Welsh duo of Matthew Rees and Huw Bennett.
The tips below are compiled from a panel featuring Kent Bennett (Bessmer Venture Partners), Sunil Dhaliwal (Battery Ventures), Matthew Witheiler (Flybridge), and Jack Young (QUALCOMM Ventures).