Aluminum trailer is the way to go but is the most expensive. Aluminum is light, durable, will save your back and car, etc. Manufacturers are TrailX and an new advertiser in CatSailor (name escapes me). Otherwise galvanized steel is a good "value" choice. Painted steel is a PITA, especially near salt water and starts to corrode the day it leaves the factory.
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<br>I have 12 inch wheels on one trailer which I feel is sufficient. The minimum size tires (4.80x12, I think) can handle the load however they are thin and will "plow" through soft sand. If you trailer in sand, you may want a wider tire. 13 or 14 inch wheels are overkill IMO. You have to hump the boat higher to get it on the trailer. I have 8 inch wheels on my other trailer and, boy, do those suckers spin at 70 MPH on the Interstate. How the bearings take it, I don't know. Go with at least 12 inch.
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