The possibilities are:
(a)
George bought the cooper business 1811 to 1812 a time limit 1810 bankrupt certificate in newspaper notice as R Gibson. 1811 R Gibson still therefore on land tax 1811, thus if any advert to sell the business and it would be in newspapers from mid 1810 to land tax entry date of George hood 1812. George Hood sees the advert from somewhere in the UK with his trade a Cooper.
or
(b)
George Hood trained the skills of the master cooper under R Gibson come business wheeler dealers 1797 to 1811 but I doubt George Hood would be employed by R Gibson after he went bankrupt 1807 and about the same year George would have come out of his training time age 21 I George was born about circa 1786. This would leave George out of work 1807 to 1812. Though John Hood was around 1780's land tax to 1819 burial year as could be father or granddad of George.
Date years 1797 to 1807 fit exactly for George to start and finish an apprenticeship though if he was born 1785/6.
(a) seems most likely though.