I've got a 1988 Gulfstream 232 with twin Merc 4stroke 150's on a custom aluminum pod (keeps the motors out of the water). I need a trailer and needed help on the sizing of a trailer for her. I know a dual axle, hydraulic over electric is the standard, but what about weight capacity? What's the minimum trailering weight I should be looking at? 8,000lbs.?[
My 232 & trailer was 10,100 lbs. The boat had twin 200's and I always towed with full fuel, coolers, gear, etc. The trailer I had was originally equipped with 5k axles, giving it a 10K cap. I blew bearings and had way too many breakdowns as I towed the rig from Michigan to Fla and points in between.
I upgraded to 7K axles on the advice of a friend and my reliability dramatically increased.
So.. my trailer weighed 1900 lbs empty. Subtract that from the total weight of 10,100 lbs and the Gulfstream weighed in at 8200 lbs. The total weight of 10,100 lbs on a 14K Cap trailer made sense to me.
Your boat will likely weigh less with 150's and if you tow with less fuel. ( I never cared, I just filled the tank up and took off.). That said, I would overbuild your trailer or look for one that already is. I learned the hard way that running close to cap on the trailer was a bad idea.
In your case, I would opt for a trailer with a 12K cap, minimum. You WANT a comfortable cushion to work with so your not running on the edge of your limits.