I think you have a good idea here. I dont necessarily think you will come out having all the moves perfected. but if you put the time into it you will be TONS better. Me and my friend did a similar experiment 2 months before he went to the army. He knew they were going to learn some jiujitsu so we decided to train everyday for the 2 months before he left. And id guess we never went less than 6 hours a day. We would work one move every couple days. and the first 2 hours was us doing that same move OVER and OVER until it was muscle reflex. then the next two hours was grappling without submissions. we would just roll and work for dominate position. Then finally the last 2 hours we would free-roll. Now i wouldnt say either of us were anywhere close to winning world tournaments, but id guess he went from a white belt who knew almost nothing, to a decent blue belt. but if you do this and you dont go in winning any world tournaments, id still be curious to see someone do this for say a year or two. i think given that much time. And also as a side note, that was the first time i got into 10thplanet system also. While i was teaching him certain moves, i was repping 10th planet moves to see how i liked it. And i must say once i really got the hang of it, i fell in love. But that may just be because im not very strong, but i am really flexible. So the rubber guard seemed perfect for me.