Runners for ranger trailer

Need to replace runners on Ranger boat trailer. Does anyone know if there is something better then treated wood to use? Have heard that ranger has some sort of new material then wood that can be used????

Treated wood won't last any longer than untreated wood, the treatment
is only for insect control, not to make it last longer.
Get some regular 2x lumber and paint it with a primer followed by a couple
coats of oil base paint and they will outlast you.
Also when covering with new carpet leave the underside uncarpeted,
it will drain better and dry quicker, lasting longer.

You can use high density plastic (HDPE) 2x4s and 2x6s - it costs more, but also requires more supports as it can't span the same distance as wood. Some companies add aluminum channel to increase stiffness to help reduce the amount of span needed, but even then it may still not be enough.

Your trailer might allow for use of it, but when I recently replaced mine it was going to take some additional brackets and welding to make it work on my trailer, so I instead just stuck with treated lumber and carpet.

Here's the product I was looking to use, the "Surpreme" has the aluminum channel added for increased stiffness:
[url]https://www.ultimatebunkboards.com/[/url]

Also, some see it as a plus, and some see it as a negative, but if you use HDPE material they will be incredibly slick so you will want to make sure your bow strap stays hooked until you're in the water. I think of it as a plus as it makes loading and unloading easier and also helps prevent the boat from freezing to the trailer bunks when it's cold out.

Gatorbak is another option. You use treated wood like usual, but instead of using carpet you install the Gatobak plastic covers instead.

[url]http://gatorbak.com/[/url]

Gatorbak is supposed to be a good option at preventing hull blisters on fiberglass boats.