My boat is a 2002, and has a custom awlgrip painted hull. The hull looks great and looks brand new to date. Personally I find it much easier to care for. Scum stains do not seep into paint as easily as gelcoat, so as long as you clean it once in a while she will stay looking perfect and will not discolor. I give her a quick rinse after each trip, and give her a wash with orpine soap and wax maybe 2 times a month. I am going on month 7 since the last wax and she looks perfect and still beeds. Awlgrip recommends using awlcare products, but applying their product once every other month as directed is nuts, who has time for that or access to reach the hull in the water. I applied 2 coats at the beginning of the year, 2 days apart, and then applied 1 coat of wax over, this keeps the wax from directly adhering to the paint and she shines great and still beeds. All has to be done by hand, a machine will wear the wax paint away and can burn it out. Wax needs to be removed before a new coat is applied or it will yellow, so I use collinite hull cleaner each winter and start over. I find I spend a bit less time keeping my hull clean and looking good with the awlgrip then I did with gelcoat. I know charter captains who get 10-15 years out of it with no maintenance, they wash it down when time avails, and that is it. If you take care of it I do not see why you cannot get 20 years out of it if taken care of and not abused. I'm on year 7 and she looks excellent, 15 years should not be a problem at all for me. It is likely the boat will have a new owner before I have to worry about that.
I know alexseal also makes a great hull paint product and it is worth looking at. Not sure what the job cost the previous owner, I believe the boat was done in SC by Crocker's Marine. They have done a ahndful of Grady hulls, might be worth calling them for tips or advice since they have experience and did a super job on my boat, I would highly recommend them if you are local to them.
Only advice i have, it have the hull painted to the bottom paint, not to follow the chine line as they did on my boat. Not sure why they did that, but would have been a perfect job if they went down to the bottom paint instead of having a section of gel showing forward.
My boat is a 2002, and has a custom awlgrip painted hull. The hull looks great and looks brand new to date. Personally I find it much easier to care for. Scum stains do not seep into paint as easily as gelcoat, so as long as you clean it once in a while she will stay looking perfect and will not discolor. I give her a quick rinse after each trip, and give her a wash with orpine soap and wax maybe 2 times a month. I am going on month 7 since the last wax and she looks perfect and still beeds. Awlgrip recommends using awlcare products, but applying their product once every other month as directed is nuts, who has time for that or access to reach the hull in the water. I applied 2 coats at the beginning of the year, 2 days apart, and then applied 1 coat of wax over, this keeps the wax from directly adhering to the paint and she shines great and still beeds. All has to be done by hand, a machine will wear the wax paint away and can burn it out. Wax needs to be removed before a new coat is applied or it will yellow, so I use collinite hull cleaner each winter and start over. I find I spend a bit less time keeping my hull clean and looking good with the awlgrip then I did with gelcoat. I know charter captains who get 10-15 years out of it with no maintenance, they wash it down when time avails, and that is it. If you take care of it I do not see why you cannot get 20 years out of it if taken care of and not abused. I'm on year 7 and she looks excellent, 15 years should not be a problem at all for me. It is likely the boat will have a new owner before I have to worry about that.