I've bought a 19' Invader bowrider, and the trailer needs some work. I've never owned a roller trailer but this setup doesn't look right. There are 12 large rollers total. 8 at the rear, and 4 closer to the front. Is this enough to support the boat? There are no indentations or damage to the hull, and it looks like this trailer setup has been used for a wile this way. What do you think?

