I would think putters would be the easiest area to break into. Putters can be very personal, and thereby might enable a new company to find a niche and be self sustaining while growing. I'm thinking similar to SeeMore, Rife, Nead and others. Wedges might be good if you had some unique design or technology that could grab some attention. Everything else is so competitive and would be difficult to grab any meaningful market share IMO.