I have an aluminum "I" beam trailer with a Formula 353 Fastech. I'd like to install some guide posts (lighted or not) on the rear of the trailer. I've seen quite a few on the internet but they look like they're made of PVC. Will these PVC posts stand up to the weight (8,500-9,500lbs) of my boat in a bad cross wind or bad approach? What guide posts do you guys use?

It should be an aluminum pipe with a PVC pipe around it !!!

U can built them yourself real easy !!!

Square aluminum and a round PVC pipe that fits over them !!

Good info, been thinking about this also

I have/had those PVC covered aluminum guide poles. Finally installed them after 2 years since I hate the way they look when trailering......when my 382 leans against one it bends them outward quite a bit.

U can make them out of galvanized steel as well,,,,just heavy !!

But if u know a welder that can weld aluminum its cool,,to built them yourself. The finished ones are not strong enough on the bottom where they are compressed to mount at the bend.
Thats why the lean over !!!

If u use square tubing 2X2 and weld the bend with a brace then stick a 2.5 inch PVC pipe on it ,,,they never bend...also dont need to make them to high ,,,just leave the PVC pipe longer and it will flex but not break and can't bent the tubing because the press. is on the pipe and not on the aluminum !!!

Stop putting the trailer so deep into the water and you won't need them.

Griff, I live in AZ, our ramps are quite steep.

Good info, thanks for the replies. I will look into making a set. I'll probably go with steel since my boat is heavy. So I use 2" square steel with 2.5" PVC over it correct? Also, is it okay to drill into the aluminum "I" beam to mount these posts or should I use some type of "U" clamp.

I bought the 6 foot Guides from Overtons. I had to make longer U-bolts to make them fit my Myco trailer. They work great .. I would never have a trailer without them again. Makes it super easy to get the boat on in any kind of wind. I nailed one real hard in a major wind storm and bent it over pretty far . With all the leverage from the long PVC, all you have to do is bend them right back . Just like new again...Jeff

Trust me, our ramps here are very steep as well. Easiest way on steep ramps is to put the trailer in shallow. If needed, have someone back the truck up slowly as you load the boat onto the trailer.

Hey folks:
I would like to offer a possible solution. I have a 353 also and I wanted to make a pair of substantial guide poles. I mounted a 2x2 receiver bracket (the kind you bolt to a pick up rear bumper) to the bottom of the I beam frame at the rear of the trailer facing outward. A compadre welded the guide poles from 2x2 square tubing and 2inch o.d. galvanized pipe. The pipe is covered with 2inch i.d. PVC pipe. The PVC is covered with carpet.

The guide poles slide in and out of the receiver tube when it is time to launch and recover. I made a bracket up front for the poles to ride in while on the road. I chose to make 'em removable so I will remain within legal width and the poles will not shake and bang the rub rail while the trailer is rolling. The poles will need to be taller than you think. You will need to have about 9ft in height so you can see the tops of the poles as you float onto your trailer. I can send you photos if you will share an e-mail address or teach me how to post a photo on this site....Hope this helps!!