C2 - I think that boat is on the wrong side of the country so probably won't be interested unless there is serious money involved.
Curry - firstly you need to realise that running a professional charter operation is expensive, boats, repairs, training, staff, fuel, insurance, safety equipment, inspection / certification all cost money. If you are asking someone to take payment for their service without all of the above then they will be breaking the law. If you are just looking for someone who might be able to do it without needing a whole day charter then perhaps some of the seafari people might. e.g. Sea.fari Forth
. Another possibility might be Calypso (I think that's the right name) who do the charter work for the NLB on the Forth.