Originally Posted by Swifty
Thanks for that, seems a neat idea, wonder how the brake linkage would cope though.
Yeah, that would be a problem.
There is another configuration that would take care of it, though. Davis Manufacturing (Hayward, CA) *used* to make (don't think they do anymore) a kit that added an underslung tongue. Let's see if I can adequately describe this contraption:
You've got a trailer, with a single tube tongue (as opposed to an A-frame tongue, though I suppose you could still get the idea to work.) You fabricate essentially a second tongue, complete with coupler. Hang the second tongue under the first, such that you can slide it in and out (keeping it from sliding all the way out would be pretty critical...) Tucked in, the coupler on the extension rests behing the coupler on the trailer tongue.
So, when you're towing, you use the factory tongue and coupler (with brakes, if equipped.) When you get to your launch site, unhitch the trailer, pull forward a bit, extend the aux tongue, lock it in place, hitch that up to the vehicle, and launch away.
Don't remember the exact specs, but I seem to recall a 7 foot long section as the section, and something like 19 feet as the longest. Subtract what needs to overlap the original tongue for mounting (three feet or so, I think), and the rest is the extended length.
You can run into problems mounting this thing, though; as an example, my current trailer has a drag point near the front of the tongue (which gets used quite a bit, as I live in a area where large dips are fairly commonplace, and the drag point will often scrape the asphalt.)
Still, I suppose you could work around that, as it's better than dunking the truck...