Tough hike, but still fun. Should have done this a couple times to prepare us for Mt. Charleston Peak last year. You are either going uphill or downhill the entire hike! Also, very steep majority of the time. We had to hold on to each other going down as rocks slip out underneath you. There's a great detailed description on this link to help get there and the hike itself. http://www.everytrail.com/guide/frenchman-mountain-summits
We didn't find a box to sign or flag but we ventured all over once on top. We probably missed it. This took us right around 4 hours. Wanted to be faster but the steep uphill and watching your footing coming down slows you down. Also! You climb up a first peak only to go all the way down and back up another peak. So don't be discouraged once you reach the top of the 1st mountain.