Mine is rated to carry 5000#s.:fam:

• 4000 lbs

• 4700 lbs

this is a lot of difference if i compare the total weigh of one to another.
That's also mean a different trailer, no ?

What are the % of securtity ( lbs ) should we include to total weigh ?

I would go with a 5000 lb. capacity trailer. Better safe than sorry. Again, I would recommend dual axles, preferrably with disc brakes. Do not even think about a painted trailer if there is any possibility you will use the trailer to launch your boat into the ocean.

mine is a 5200 lb cap trailer

The trailer that came with mine was the original trailer with the boat. Single axle Load Rite. According to the specs on my registration, is rated for 3680 lbs. Tows my 87 V like a champ, but like others have stated, a larger capacity is the way to go because you just never know what will be on board when you are towing. Oh, and my 150 hp Johnson weighs in at 375 lbs (as per OMC website).