Hi guys, its been raining alot recently and i noticed this morning (haven't driven the car in about a week) that the RH footwell (drivers footwell for me) is absolutely soaking, as is the lower section of the boot floor. Recently i changed the aerial as this was damaged and basically was an open hole to the outside world and thought that this would have fixed it but there is still water ingress into the boot, the seal for the boot lid is in good condition so not sure where it may be coming from. The car did have a new fabric roof fitted fairly recently (before i bought it) and i noticed when i got in it last weekend and took it for a drive that there was a good bit of water coming into the car from the seal at the top of the RH window. What is the best way to search for a leak?

thanks