She has an easy time of it and does it very quickly indoors. The gravel was intentional as she is VERY aware of different textures. Carpet vs Tile is like a whole different training session. I'd have to force her to walk through a mud puddle, she'd rather walk around. As soon as I can get time with the wife for recording I will do a no food and/or luring, on familiar ground (carpet) video. She can stand, down stand, sit down sit, no problem inside the house. This was only our 2nd outdoor training session with no leash. She isn't used to training outdoors for 1 and for 2 she's used to training outdoors with a leash. Our down training is almost non existent outdoors because up until recent outdoors was all walks and different types of commands. I wanted to challenge US that day so that I could capture difficulties and mistakes =) . Also the randomness in rewards(2 sits + down sometimes. 4 sits and a down sometimes) and duration(5 secs, 2 minutes, 45 seconds) I read (Dr. Ian Dunbar, and puts it much more elequently I might add) that the randomness helps to cement the behaviors better and have less anticipation of the next Queue. Thus REally following commands and not the routine.