BOB v.s. 50 front

in most cases we will keep in just one back for protection with the other back on a route or formationed out somewhere. so then, if we were in I-right and the tb was sent on route w/no protection responsibilities, should the fb follow his normal rule and help out to the strong side?

by outside invert strong and weak, are you referring to the 9 techs? so, vs a straight 50 the fb takes the strong 9 and the ps uncovered guard only has to worry about the ps backer. does he help the center on the nose with eyes to the backer? also, if facing a weak eagled 50 where the bs g and t are covered up, does the c and ps guard take nose to bs backer with the fb double reading ps backer to 9 tech on the strong side?