Yes Kate, do some reading, like Interlux's recommendation to always remove
VC17
when changing paint:

Any knowledgable person will tell you that any paint can be applied over a
vinyl but a vinyl cannot be put over anything other than vinyl. Interlux like
every paint manufacture is just trying to cover their ass against complaining
people. I put Awlgrip Allstar over Baltoplate on my boat with absolutely no
problems.
S/V Express 30 "Ringmaster"
"No shirt, no skirt, full service"