It's really up to you how tall you want your seat. I modified mine because I felt like it locked me into place too much, so I took the cover off, shaped the stock foam a bit to make it flatter, and then cut and glued together strips of a closed cell foam pad I bought at walmart in the camping section. I just added progressively smaller pieces on top of each other, like a very gradual pyramid, and made a little cut out in the stock foam to place my pyramid into and fit the stock seat cover over top of it. The cover doesn't fit perfectly now so it's not a beautifu, custom seat look, but it works and feels better than it did before. As for the layer of soft over the hard in the stock seat, mine was old and the 'soft' foam in the cover itself had rotted out. For the deluxe at least, it looks like Honda made the foam on the seat pan relatively hard, and then put a layer of soft, open cell foam into the seat cover.