High top roof rack?

Has anyone fitted a roof rack or roof box to their fibreglass high top roof?

Can't help with the roof box, but another option would be a Fiamma rear box that fits on their bike rack or a Thule back rack and box. No good if like me you always have bikes on the back but worth a thought if you don't, would be more aerodynamic, easier to load and less chance of snagging low tree branches, I use plastic storage boxes for hiking and biking gear in the van when travelling and put them in the awning or under the van when pitched up, 
Colin

Yea I will have my bikes on the back, its for for sticking a surf board and kayak on the roof or even one of those side on roof gutter jobbies, just asking about to see what can be done. As I understand the roof on the Trophy is not meant to be used for any load bearing, but I would love to be corrected on that issue!!!

had the same thought for our Topaz, but yes the weight bearing might be an issue on the fibreglass. would love to hear if you have done it