Ha! That reminds me Ron of when I got my first crutches when leaving hospital that time. They made me try them out around the hospital - not only on the flat surfaces, which are pretty slippery, but also up and down the steep stairs of the fire escape. This was quite terrifying, but they stood there and watched me every time (ready to catch me I suppose in case I fell) and I had to repeat this over several days, until I "passed". It was like a driving test.