[Perfectlap]

I use a lampshade or a shoe box. I thought about cutting a hole in the box so I could get my hand in there while keeping the box flush with top.
Also an idea was to use a sheet and open and close the soft top to make a sorta 'tent'. Spray away let dry and then remove the sheet. If you have a soft top cover getting your hand in there and spraying underneath the cover is a good idea too.
usually I try to spray right before my monthly clay barring of the car.