If it is any consolation, it is not just hire boats which have to progress according to when SC want to operate locks and bridges. It happens to those of us who moor up here and I for one find it most infuriating to the extent that the only time we venture onto the F & C is if we are going to an event. Otherwise we stay on the Union where we can stop and start as we wish.
Unfortunately, during the consultations prior to the Millennium Link, which saw the opening of the Scottish Lowland canals, it was stipulated by the local authorities when and how the lift bridges were to be operated. If the LAs had had their way, they would never have been opened at all. In the circumstances (the canals having been closed for 40 years) BWS, as it was then, grasped at any straw to get the canals reopened and we all hoped that things would settle down and a more realistic attitude would prevail. Sadly, this hasn't happened and we are left trying to get SC to realise that boaters can actually be trusted to operate locks and bridges. Good grief, the locks on the Crinan (also managed by SC) are actually bigger than the F & C and are boater operated. On the Lowland canals we are fighting against the hire boat operators as they too don't trust boaters to operate locks.
There are actually two lift bridges between Auchenstarry and Kirkintilloch and there are limits on when they can be opened (LA Rule). This means that a boat has to be worked through the first one (in any direction) to give enough time for the boat to get to and through the second one before the last permitted opening of the day. I understand too that the emergency services have to be kept informed of all bridge openings so that emergency vehicles are not held up. twechar may be a small rural lift bridge but it carries a lot of road traffic.
My advice to anyone hiring up here would be to contact SC as early as possible and arrange for passage through controlled locks and bridges. If SC have advance warning and know your wishes (before you actually get to the boat) they are more likely to have staff in the right place to help you. I don't think they try to be obstructive, but they are bound by some LA rules and they have limited staff. and they need to see the light :-)
haggis