I was of that same mind as far as a trailer goes, just a short haul storage deal in case of hurricanes, etc. so I only approached the trailer search from there.
I think I understand what Viking may mean about the weight - if you are trailering a powerboat most of the weight is probably back there hanging off the transom, as opposed to in the center on a ballasted sailboat.
I documented what thought process I went thru on EE's site at
http://my.att.net/p/s/community.dll?ep= ... 280776&ck=
but basically I took that into account and looked for a heavy duty trailer with a hitch to axles dimension that would place the center of the boats gravity right over/between the dual axles. If you look on the site at the pic of the boat behind the F350 you'll see the trailer sits pretty level, in fact the tongue weight was nearly spot on when I checked it after the work I did. And the trailer we picked had plenty of cross members as well
As far as pads punching thru - all my weight is (now) sitting on 4" bunks with a slot for the swing keel itself so no weight is on that pin, and I used runners instead of pads for that reason. I dropped my lower bunks and loosened my side bunks a touch at at time when removing EE from the trailer, and she sat there, so I'm pretty sure they only steady the boat, not carry the weight.
Again if I was in the habit of trailer-sailing it around the coast, I might rethink the trailer, but we towed it from Ponchartrain to SW Mississippi with no problems,and I moved it from home to False River with no issues other than being smart about my speed.
Insert disclaimer of your choice here, of course !