My husband talked me into purchasing a FP Jumperoo for our 6mo DD - she loved the one at a friends house. I'm not a fan of stationary activities. Not to mention the way my friends 1yr DS bangs around in his jumperoo. I made DH & the Nanny promise no more than 20 minutes/day. Can anyone tell me a bit more about this contraption. I'm planning on putting a shock absorbing mat underneath, but I'm really worried the bouncing could effect her ankles, shins, legs, etc.