What are the best rollers to use on a boat trailer for easy launching?
I'm fed up with pushing and shoving my boat off the trailer at the slipway. The old black rubber rollers are perished, flat-spotted, and leave marks all over the hull. What should I replace them with so the boat rolls off easily?
Answer
Polyurethane rollers are the absolute best choice for your boat trailer to ensure easy launching and retrieving. They resist flat-spotting during winter storage, never leave black marks on your hull and spin much more freely under load than traditional rubber.
Flaws of Rubber and PVC
Most trailers leave the factory fitted with black rubber rollers because they cost less. Over time, UV rays and saltwater cause rubber to perish and flatten out where the boat rests. Flat-spotted rubber drags against the hull instead of rolling. This forces you to reverse deeper into the water or physically shove the boat off the trailer. Rubber also leaves stubborn black streaks across white gelcoat.
Hard PVC rollers are usually blue or black. They cost slightly more than rubber but remain affordable. PVC can become brittle and crack in freezing winter temperatures. These rollers spin better than degraded rubber, yet they lack the slight cushioning and ultra-low friction required for effortless launching.
Why Polyurethane Excels
Polyurethane rollers are the marine industry favourite. Brands like Stoltz, famous for their translucent orange rollers, or Yates offer products that outlast rubber by years. They cost more, typically £15 to £25 for a standard wobble roller compared to £8 for a rubber equivalent. Treat them as a one-time investment. Polyurethane never marks the hull. It flexes just enough to cradle the boat and spins brilliantly under a heavy load. These rollers are incredibly slick. Never detach your winch strap and safety chain until the stern floats over the water. Otherwise, your boat will roll straight off onto the slipway concrete.
Matching Rollers to Your Hull
The type of rollers you need depends entirely on your hull material and shape:
- Fibreglass (GRP) hulls: These require a multi-roller setup using wobble rollers. Wobble rollers are the ribbed, wheel-like rollers mounted on articulating arms. They pivot to match the deadrise angle of your hull. This distributes the weight evenly to prevent the gelcoat from cracking.
- Aluminium hulls: Aluminium boats generally prefer Teflon-coated bunks to prevent rivets or welds from popping under point loads. If your trailer uses rollers, the main weight must rest on heavy-duty keel rollers. Side rollers should only keep the boat upright rather than taking the load.
- Keel rollers: These sit on the centreline of the trailer. They come in cotton reel or V-cut shapes, usually ranging from 150mm to 300mm wide. Polyurethane keel rollers are necessary because the keel carries the bulk of the boat's weight.
- Bow snubbers: The V-block at the winch post should also be upgraded to polyurethane. A rubber snubber leaves a black smudge right on the bow of your boat every time you winch it tight.