first, you need to post the brand/model of your TT. is it an ultra-lite framed TT?
if it is, you'll void the frame's warranty by doing this. this kind of trailer frame isn't even strong enough to support a bouncing bike rack.
also, double towing is not allowed in some states and there's a length limit in those states that do allow it.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC