Unomedical is coming to market with an all in one 30 degree set and inserter. For folks trying to get a set into a skinny as a rail kids this may help. The set and inseter come in a single unit like Unomedical 90 degree Inset set.
We are big fans of the Inset all in one sets. Our kids are so skinny there isn't a lot of real estate to shoot a set into that has enough fat. (They didn't inherit this condition from me, I have acres of prime plumpage.) The angle may provide more set location opportunities for them or maybe a set will last a little longer.
For more information see the manufacturer's web site.