Hi Dibbzy.....nice to see you back in the forum. I did a quick search and found a store on ebay that does international shipping and has some items for your RXT......
They do have a boarding ladder, but it states it's for the RXP, GXi and a few others. So that you may look at what they have to offer, I'm attaching a link to their page of parts for the Sea-Doo.........http://stores.ebay.com/Richardson-Motor-Sports_Sea-Doo_W0QQcolZ4QQdirZ1QQfsubZ11178932QQftidZ2QQtZkm
Thanks for your question and if needed, I'll try and find out more later this afternoon.........