I have a R runner under my Skagit Orca since 2003-it has not been trouble free but when you tow 5 to 6000km a year Sh_T happens. The basic trailer has been bullet proof but here is what I have done and I would order this from the get go. Insure that the spindles have at least stainless speedi--sleeves for the rear seals to ride on, electric over hydraulic disc brakes , Oil bath bearings, Full side guide rails, rear bunks with UHMW in place of carpeting for launching with rollers forward. Tires 10 ply with spare. Good quality electric winch. Mike at R Runner builds a good quality low end trailer but for heavier boats and long distances you need to add things to make it trouble free. I would not hesitate to Order a trailer from Mike but I would customize it which he will do. I would insist my next trailer has to have all these things and only then would I compare prices so you are comparing the same things