They rock back and forth. Rubber bumpers underneath the saddle keep the metal saddles from contacting your drives.

That's a good idea thanks! I'll keep looking for a used one then... all I keep finding are TRS ones lately though.

Can you tell me who makes the ladder

http://www.aquaperformance.com/

Was there any concern about being able to secure it without worry of the fiberglass cracking or leaking

I don't know about the executioner, but the earlier lightnings are pretty thin back there. Send me a link and I will show you what I did. I made my own out of a garage sale ladder from a pontoon. It is not permanenet, but it works.