probably wont be much help to you, but my old man ordered the new model xt bout 3weeks ago and gets it in 2 or so weeks, but the towing on the new xt is 1.4t braked.
but looking at redbook and comparing the different year models they vary,
08 has 1.4t
07 has 1.8t
06 has 1.8t
05 has 1.8t
04has 1.8t
03 has 1.4t
so yeh guess it depends on the year and what condition the turbo is in as to how well it will tow, but if the boat ony weighs 1.2t you should be fine
good luck with the search