I replaced the shear pin on my 2005 Sea Breeze. This is how mine looked after removing the false bottom of the bed.
This is the thread I used to help me get it done:
You can get the slide out by pushing it, I used my back on the bed and feet on the opposing wall.
Once I had it about 3/4 out, I would momentarily hit the slide switch to rotate the gears until the hole was visible and aligned.
I then used a punch and tapped the remnants of the old pin out. I replaced the old roll pin with these:
I gently tapped in the new spiral pins.