We use a M-D Trailer to haul our 30' flexdraper. They are the least expensive that I have found for what they are. With a 36' you will need the heavy duty one and in July they were around $5,200 give or take. http:__www.md-products.com_header.html
NEVER buy aheader trailer because it's cheap the headers are so expensive any more and a cheap one or a make fit can cause a lot of damage I ruined a 1020 hauling it on a poor trailer but it costs money to go to college my .02