After Scott Dann's departure at the end of January, the Rovers boss opted to give Hanley, a former Academy and Reserve team captain, the responsibility of leading the first team.
"The decision was made with a lot of thought, a lot of discussion with the staff and one or two of the senior lads," admitted Bowyer.
"We are fortunate at this moment in time that we've got quite a few captains out there, Paul Robinson, David Dunn, Lee Williamson and Matt Kilgallon. Senior members that act as captain's on the pitch anyway.
"But we just thought that we are trying to build something here for the long-term and the appointment was made with that in mind as well.
"Grant leads by example, he doesn't ever moan about training, how many hours he has to do or the extra responsibilities, he just gets on with it.
"He's a good organiser, he's a good talker, he gives everything for that shirt every time he puts it on for us and that is what we want from a captain.
"He has served his apprenticeship well, he has served along side some important players that have played for this football club. Ryan Nelsen, Chris Samba, who have both been captains.
"He's played alongside them and gained a lot of knowledge and experience for somebody who is still only 22."
Hanley will lead the side out at the Riverside this Saturday when Rovers take on Middlesbrough. Tickets will be on sale on the day of the game from Middlesbrough priced at £27 Adults, £17 Seniors and £14 for Under 18s. Call the ticket office on 0871 222 1444 for further information.