I have never really liked the ladder for the over cab bunk area on our Sunseeker. Firstly we do not have kids up there so I don’t need that hinged door that covers the cab Cutout. Second the ladder is designed to have the hinge door folded out and have the ladder attached to the metal tabs. And finally, I find that the steps on the ladder are too skinny and really hurt my feet when I try to use it.
I found a really nice aluminum step ladder at a local hardware store that looked like I could modify to meet my needs. The steps were removed by removing the screws and drilling out a pop rivet for the support bracket. Since the ladder was going to sit down in the cab area which is lower than the cabin area floor, I drilled new holes which located the steps higher up the ladder. I also cut down the width of the steps by 3 inches so that it would fit between the cab seats. I also shortened the ladder so that it fit better into the space. I am not sure if I should put a cross brace at the top of the ladder or not, it seems pretty sturdy right now. The weight rating for the latter was 225 but that was in stepladder form. I weigh more than that and the ladder seems very sturdy.