I have 1999 46'-6" Custom 2" x 8" steel triple axle float-on boat trailer rated for 18,000 lbs total.
Sandblasted, repainted and re-wired in 2019. New 6K axles in 2008.
I have owned it for 2 years and use it to store my 45' Excalibur inside storage but no longer need it. The previous owner also had a 45' Excalibur which it was made for, although a float-on trailer like this can hold and haul almost any large boat. It's still in storage, but hopefully it will be available in early May 2020.
All tires have good tread and hold air, however they are older and should be replaced.
I express this because I have gone through this search nationwide, there are so many 40' to 42' trailers out there and many aluminum ones..........finding a 46'-6" conventional tongue pull is rare.
Many more photos at the link below.