A 4 year old hull should come up just fine with buffing and waxing. Just cleaning/polishing compound should do it.
I strongly prefer a gel coated hull properly maintained over an Awlgripped hull. The Awlgrip looks nice but any small scratches etc. show up and hard to get rid of.
A little elbow grease and regular maintenace and it should look fine for many years. Wax is much cheaper as well.