Yeah did it myself and it cost a bit over $4,500 after I got carried away with going for disc brakes and then having to use an actuator from the electrics, could have done it real cheap by just using electric drums but they really aren't suitable IMHO for boat trailers and have always had trouble with them in the past.
The galvanising blew out because they had to sandblast the original paint off instead of just pickling it and even then they had to do the front section twice which resulted in a heap of gal stuck in the drawbar

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Must have been good paint originally and very little rust under it after 7 years in fact the only small rust spots were under the rear berth supports.
It's a pretty strong trailer now, wanted 6 stud cruiser rims but too many complications so just went for the 14" 5 stud ford rims and easier to source when remote anyway and plenty of rating, bought most of the gear from huntsman trailers on ebay, very efficient.
Luckily our son in laws father had a hoist so lifted the boat off and on again with that but blocked his shed up a bit due to extra time dipping etc.
Made the cross member under the dagger board heavier as the old one had broken away twice and all up it's a tare of 700kg now, the original was only 330 kg very basic but got plenty of extra rating now and the truck towbar is only rated at 2800 anyway.

Just about got trust me together but now got to load the dinghy in the truck etc, should have been gone a month ago.
