It's a Seadoo...not that large an area (not as large as a complete car anyway) and i see that it's also a Urethane product. If it's Acrylic Urethane...it will still set up fairly quickly if the temperature gets to warm. If it's a Poly Urethane, it will take longer to set up, giving you plenty of time to get around the vehicle. Another variable that will either speed up or slow down the curing process of the paint is air movement and the conditions that you are painting in. If there is a fair amount of air movement, the paint will top cure and could cause solvent popping, if there is minimal air movement, the solvents that are released in the curing of the paint will have no where to go and cause the paint to loose it's shine.
I know, it's like golf...so many things to remember...LOL.
If you have any further questions feel free to ask, I'll answer whatever I can.