On my previous grow i had the same problem, short bushy plants with leaves covering all the new growth.
a couple of weeks into flower i decided to remove every other fan leave from the plants. free'd up a lot of space.
I ended up removing most of the large fan leaves... all that happens is that vertical growth slows down. and the side shoots grow larger leaves to compensate for it.
I have no idea wather or not the budsites need more light or if the fan leaves feed the shaded sites.
Either way is fine... try removing just a couple and see how it reacts... i hear that if you remove one large fan leave from each node, opposite sides each time working your way up like a spiral staircase (understand?) then it will prmote side growth a lot more and end up with large side buds, a little like the affect of topping would have but keeping the height.