I am not a novice to towing having towed a 4200# boat safely as far 300 miles one way dozens of times with an appropriate tow vehicle (Durango with tow package) that has a tow capacity of 6200#. Reading TomB's posts suggest to me that he is towing with the Pacifica that has a tow capacity of 1500#. IF TomB had the factory tow package (which he admits he does not have) then he is at the limit of the Pacifica (3500#) BEFORE adding normal boating cargo to the boat and gear to the Pacifica and passengers to van. Since he actually has a tow capacity of 1500#, he is 2000# over his vehicle's actual tow capacity. I'd suggest the Pacifica is not the right vehicle of choice for this boat with a factory tow package and for sure is not the vehicle of choice with after market hitch. FWD is also not a good choice because of wet and slippery boat Ramps. I have seen people spin their wheels attempting to retrieve their boat on various boat ramps, some without success and some with serious tire smoke.
A factory tow package for the Pacifica includes: 220 amp alternator, seven and four pin connector, class ll hitch with 2 inch receiver with rating up to 3500# of gross trailer weight and trailer tongue weight of 300#, heavy duty radiator, trailer sway damping/sway control. The $995 MSRP cost for this is well worth the spend IF you have any inclination of towing something.
Also, if you install an after market hitch and exceed more than your owner's manual states you can tow (1500 pounds) and then require warranty work due on the engine overheating or some other issue that can be traced to towing, I suspect Chrysler will void the warranty. Just saying.
I appreciate your perspective, but FWIW, I'm not exactly new at this. I've done over 300,000 miles towing trailers between 400-62,000 lbs, with everything from a Mustang to a Kenworth road tractor. I've been boating my entire life, and have been dealing with ramps as the driver since I was 16. Much of my experience to date has been with FWD minivans on said boat ramps. Trust me, I get it.
As far as safety's concerned, my aftermarket Draw Tite hitch is rated for 4,500 lbs towing, and 675 lbs tongue weight. Both are significantly higher than the factory tow package. My trailer has hydraulic disc surge brakes that are in proper working order, and it tows like a dream behind my van. I've geeked out on temperatures, aftermarket coolers, and such for years on other forums with other tow vehicles, but this is one that doesn't appear to need any supplementation. That is, of course, assuming the instrument cluster temp readings are accurate.
I get it...you're reciting the textbook answer here, and I can't disagree with that. But I'm very comfortable with how my van tows, and I'd make the same choice again.