Hi Phil,
Pretty much what 4129R has said, we all have variations on the theme, but low entry trolley jacks are a common point !
At the front I slide the jack under the middle of the car, in line with the central spine to get the pad directly underneath the front T section. I slide a piece of wood, roughly 18" long between the jack pad & the chassis. This comes just behind the 3 bolts holding the front closing plate to the chassis itself. You're lifting directly on the chassis front T section. If it's central then you can lift the complete front end quite easily from here.
At the rear I use the rear hoop, and again you can get both wheels up at once. I use a small block of wood with one side raised slightly to accommodate the difference in heights between the chassis mount and the rear plate. Not so much for actual lifting but if it rocks it's a more stable platform for the jack pad. A normal trolley jack is ok here of course, plenty of room.
I've never used the fibreglass body for lifting although that's the way you're supposed to do it.
Brian