Tim,,, Wrong
the ES is designed for floats, if you look on your fuse you will see it has 2 places for the LG one in front and one behind the cockpit, it also should have come with 2 plastic mounts for LG, install the second one now then build your floats,(which is a pain by the way) when your ready, just don't epox the ger on the rear. I just built a set of floats and I used expanding foam to fill the gap between the foam and plastic of the floats, the plastic is very flimbsy, even after it is put together and I will be landing on the ground with mine too
Good Luck I think your going to be very happy with your ES
here's my 2nd ES, still a work in process but getting close to finished now