Building a lather is an art all to itself. Given decent prep and good technique and most important a truely sharp edge shaving the chin shouldn't be a problem at all. If I can use a straight without cream at all I would think others could get by with canned cream (I've only used canned cream and a straight once, it was a great shave).
If the problem includes DE blades I'd say its either prep or technique. My only suggestions are to add lather, shave cheeks, then add lather again before trying the chin. Next get the angle and direction correct. Failing that, grow a goatee. :eek:
To me it sounds like the razor needs 10 swipes on 8k and some stropping.