---

I have frequented many truly terrible ramps and am not seeing why articulating bunks would help you.

Please describe in detail the features (or lack thereof) of the ramp you are considering using. Photos help.

What trailer do you now have, what are the problems with it that would require replacement? A new single axle trailer for your hull is $2500-$4000. Are you sure about cost effectiveness of rehabbing?

A keel roller with bunk trailer is what really made launching on bad ramps easier.

For steep ramps, adding rear guide posts help stop wagging the dog.
For shallow ramps, extending the tongue (adding hinged part or replacement) is a solution.