here is a hippo mount that is designed to suit the Schleich brand figures (Schleich brand Hippo - part number 14681 - heaps on ebay for around $10)
The bracket simply screws in using 2 of the screws in the timber side rail. Best to print in the blue and the foot cups are like water splash simulations and then put 4 dabs of silicon glue on the feet and press the hippo into the mount and leave it to dry and then mount into the game. Some people have located the hippo on the ramps but I feel this causes ramp breakages as the hippo is a little weighty and this location does not obstruct play while looking cool and with the shape of the mount the inserts can still be seen.
