The trailer/boat weighs a good 300-400#s less than half of what the Expi weighs. Regardless, the tongue weight has more to do with rear end squat than the weight of the trailer itself, although I will admit that tongue weight is a function of the gross trailer weight. To attribute rear end squat to the ratio between tow vehicle and trailer weight, though, is a bit off the mark. Considering the OP can lift the trailer tongue by hand, I would guess that the tongue weight is more no more than 10%-15% of the gross trailer weight so at most only talking about 300#s. That's like 2 people sitting in the last row or one person with some gear in the trunk. There should not be too much squatting. With that said, you could be correct though that suspension system is shot and needs some attention.
Originally Posted by RRILO View Post
You're going to have to lighten the load on your rear axle somehow. Either remove gear/items from inside the truck itself or from the boat, modify the trailer so that you have less tongue weight or use weight distributing bars.
there is no way he get around this, the trailer manufacture has these axles where they're needed to be.
On many trailers axles can be moved fore to reduce tongue weight. The bow stop can also be moved aft. NOTE: from experience, the latter is the easier fix of the two.
bass boat builders use traielrs with tandem axles soley for the purpose of looks.
Double axles have several advantages to single axles. For one, they are safer because they are more stable at highway speeds and are less prone to sway. Tire blowouts are less of an event. Double axles are typically also required to have brakes where single axles are not. The disadvantages though are more maintenance, i.e. replacing 4 tires vs 2, brake system maintenance, etc. Not sure if double axles on bass boats are solely for looks but there sure are other pluses than just aesthetics.