So far I've piled on about 4k miles with a triple stack like that and have had zero issues.
Did you beef up the axle?
Nope, just started with a proper trailer. I don't remember the weight ratings, but its probably a 5000# GVW trailer. Tandem axle, 20' deck, plus the V portion. I paid $1500 for it, and really regret not doing something like this sooner. It pulls nicely, and can easily handle the weight of three boats.
![[Linked Image]](http://a3.sphotos.ak.fbcdn.net/hphotos-ak-snc6/165308_1633371285394_1570037517_31480562_2217778_n.jpg)
![[Linked Image]](http://a4.sphotos.ak.fbcdn.net/hphotos-ak-snc4/163224_1633372085414_1570037517_31480566_7705576_n.jpg)
![[Linked Image]](http://a7.sphotos.ak.fbcdn.net/hphotos-ak-snc6/165549_1639371755402_1570037517_31490756_5133069_n.jpg)
and with just a single F16:
![[Linked Image]](http://a1.sphotos.ak.fbcdn.net/hphotos-ak-snc6/217337_1811435256882_1570037517_31758989_542012_n.jpg)
Down side is it takes a solid vehicle to handle the windage. I could have made the rack shorter, but being that I dumped almost $2k on the rack and back mast support, and F16/18's aren't getting any smaller, I wanted to leave some room for growth so to speak. While it could be done with a 1/2 ton, I wouldn't want to tow it with one. Even with a hopped on diesel I'm getting at best 12-1/2mpg, and the bit better brakes and suspension is a nice piece of mind as well.