Just noticed on the M2 website that from early next year you can travel BLK-BHD up to (Friday)three times daily and twice daily (Mon, Tues, Wed, Thu) and daily (Sun) for £79 one-way. The prices then increase to £99 when 2 pax or more are already booked on either flight and the fair then goes to £119 for Manx Gold when 4 or more have booked.
I personally think that it is not a bad fare for a return flight from BLK. Especially on the Monday and Friday when you can be in BHD for 09:45 and leave at 17:40.
I don't know why M2 don't advertise these more. If LS only offer 1 daily flight (which is definately not suitable for businessmen/women on a day trip) and MAN and LPL not being the best for easy passage - now a major advantage and convenience to business travellers, why not?
May try it out!