FR could certainly base 3 or 4 800's at BOH as long as they flew to Spain, Italy and Southern France. The GRO route is doing well for about 10 months of the year selling seats at the mid to high range of FR's price structure (can pick up a real bargain Jan-Feb).
Doing this would also free up aircraft at PIK, DUB and GRO allowing new routes there.
Murcia, Almeria, Rome, Venice and Bergerac would work well.
Sadly, I think FR will be looking at basing on mainland europe rather than BOH. Hopefully we will pick up a route here or there over the next few years.