>>16413923R/S abuse is quite easy, although you need a cart with a dead/removed battery.
FRLG is pretty difficult, however. No one has really bothered to write a guide on it so far, but there's enough info out there for people to figure out the general method of approach on their own.
>>16413944I'm assuming you mean still the same as in Gen IV, in which case, no I don't believe it is.