Cal, it ain't that bigga deal to do the bearings. Replacing hubs is redundant, unless you have busted studs, rust, etc.
Ski Masters is right, you could sling your boat all over the highway if things failed at the wrong time. Not that it would happen, but they have to have that mindset. Find somebody local, a decent neighborhood mechanic (not a chain like Pimp Boys) and give him the boat/trailer first thing in the AM. Pick it up after work and write him a 200$ check. End of tragic story. Make sure you take the speakers off, boards out of the racks, send the chicks home, etc. first.