I do not know of any 30" Dish that can be skewed for using 2 x LNBF's.
You could use a DP LNBF and feed a DPP44 switch to allow the use of a single ine to a Dual Tuner Receiver.
Then you would have to feed 91 from another Dish, with the same type of LNBF.
You could use a DP LNBF and feed a DPP44 switch to allow the use of a single ine to a Dual Tuner Receiver.
Then you would have to feed 91 from another Dish, with the same type of LNBF.