A Back Rules in Blocking for the Triple??

I have a DVD from American Football Monthly by Scott Dieterich from Parkview Baptist in LA. They run the flexbone and in their blocking schemes they always want to pitch off of #3 (the force player). They want to avoid arc schemes by their PSA. They don't say exactly why they want to avoid arc schemes but I believe it is because it is often difficult to block the force player unless you cut him. Most states do not allow cut blocking on the perimeter in high school. Parkview uses what they call a wall/seal scheme for their PSA which usually has him blocking a LB that is in the box or extend up to the safety. They call it the Combo Triple because it combines inside and outside veer into one play. They use the same mesh point regardless of who the handoff key is. Against any 4 man front defense it is pretty much like most flexbone teams run inside veer. The DE is the handoff key and they pitch off the next man out but when they are seeing a true 50 they combo the DT (typically the handoff key on inside veer) with the OT and PSA (or TE) and the DE is the handoff key (outside veer blocking). That way they still pitch off the force player. They have other schemes to handle special situations but this is their base. They are very successful in LA also. I don't have a working knowledge of this scheme but it is very interesting to me. I coach with a guy now that ran the wishbone for 15 years but went away from it because of the difficulty in blocking the force player. I also talked to a coach from TX that said if he was coaching in a state where he couldn't cut block he wouldn't be running the flexbone. There are plenty of successful flexbone teams that do arc block without cutting but I think this scheme gives the PSA a much easier block and appears to be just as effective. If I was putting in the flexbone I would definately investigate this scheme as one of my choices as to how to block the perimeter.