How to adjust a boat trailer?
 

My son ( a chip of the old block) has a 2003 19 polar no matter what he does he can't get the boat to center itself on the trailer, when he first bought the boat it went on straight than a tree fell on his boat and broke the console, he got it fixed but now the boat never goes on the trailer straight. The trailer looks straight and not bent the boat looks fine too , what gives? What should he look for? We tried moving the rollers in than out , nothing still the same. I'm asking for your views to this issue. He wants to buy a new trailer but what if it still goes on crooked than he is out $3000
Maybe this happened to someone else and what did you do
Thanks

I've never had a roller trailer, but it would seem that rollers too close together might cause that. Especially rollers towards the stern, if they are too close it might cause the boat to sit crooked. So my guess would be move the rollers toward the stern out (further apart) if you haven't already.

https://www.thehulltruth.com/boating...r-trailer.html

Lot of good info here in this THT link. It might be as simple as not backing the trailer into the water so far to allow the rollers can guide the boat into the proper position.

It seems like if it was working before the tree incident and not after, that something got bent or knocked out of line when the tree hit.

Echoing Randleman, did the trailer get bent when the tree fell? That could explain it.

You might back the trailer down and have someone at the bow slowly cranking the boat onto the trailer while another watches the boat from behind to see what happens, where it goes wrong.

I had issues like that when I had my roller trailer. The rollers make the boat slide on front to back but not side to side so if it is a little crooked thats how it sits on the trailer. Theres probably a better way to get it straight on the trailer, most of you guys are better boaters than me.
I got mad and took the rollers off and put 2 sets of bunks on the trailer. Kept the brackets just no rollers so the brackets still move. You can push the front bunks down in the back of them to help line up the boat. It went from a big pain to load to crank the boat on and drive out.
If I would have kept the rollers I would have put one of those wide rollers in the center with the screw type notches in it to help center the boat.
I think if it would have bent the trailer you wouldnt have a boat left.