Are these platforms difficult to install?

No, they are very simple. The platforms are extremely heavy, but the are simple to assemble or install. Platforms with standard sized inserts, are comprised of 4 pieces. A main center tile, two drop zones and the insert. The platforms are assembled by placing the tiles in the respective positions and using the interlocking edges to connect the four pieces. All in, approx. three to five minutes to assemble a platform.