We'll be at Yosemite in 5 weeks time. I'd love to do the sentinel dome hike having been inspired by Pacificnw's enthusiasm for it. I'll be with my husband and 4yr old daughter. My husband has a right sided weakness and falls over sometimes - he has a few medical problems. The distance won't be a problem. It's more about how safe it is in terms of sheer drops etc. He and my daughter(aged 3 then) managed the vernal falls footbridge hike last summer in 95 degree heat.
Thanks for your thoughts on this.