need to redue boat trailer bearings. have done before but not confident of my limited skills as  I plan on going longer distances this summer.Question is -- is it ok to use the pre greased hubs where you just have to replace it all? Are these low quality. any one use them at all? i use the bearing buddies

I always used the original bearing buddy for repeated drowning of the bearings. 

 

 

I suppose it depends on where you buy them. When a friend  had a bearing problem on the highway, he had to use a complete, pre-greased hub. It lasted about a month when the housing broke apart and damaged the axle. If you can do it yourself, you can buy quality parts, take your time, and assemble it.