Hi-Lift Extreme, but I actually use the bottle jack and axle stands in the driveway for regular work.
Or if you can use an external grip and really need the lift, a Hi-lift jack like this random one:
Hi-Lift Jack HL484 48" Hi-Lift Black Cast and Steel Jack https://www.amazon.com/dp/B00042KG3A/ref=cm_sw_r_apan_glt_i_2CASA07C4SARXBZN4PWG?_encoding=UTF8&psc=1
Sadly this may be the best option. Unless you are looking for a serious project, with many man hours and possibly thousands+ invested, you should look elsewhere. Rebuilding a boat this size is almost never worth it because someone else is likely selling a much nicer example nearby for less money.
As far as getting it back on your truck. Borrow/rent a highlift jack and put it under the trailer in the rear to lift the weight up slowly and put it back on your truck. Be careful and good luck.
If you can avoid changing a tire, you avoid it, because you will frequently find yourself on unstable/ uneven terrain. So you use a jack like [http://www.amazon.com/Hi-Lift-Jack-HL484-Black-Steel/dp/B00042KG3A/ref=sr_1_1?ie=UTF8&qid=1456865265&sr=8-1&keywords=hi+lift](this one) since an ordinary jack for a very high vehicle simply won't work, and you cant just shove a bunch of stuff under the jack and expect it not to move. Consequently those jacks can be used as a winch if need be.
Personally I would never jack up a wrangler with the stock bottle jack if there were any other option. That thing scares me. A lot of wrangler owners use a hi-lift.
It's a Hi-Lift Jack.
for this situation I'd recommend the high lift jack (like this)