The proper term is "invocation" of saints. I understand where you're coming from - but I believe a Scriptural argument can be made for purgatory, invocation and the specific Marian dogmas of the immaculate conception and the assumption. All those doctrines tie in with the larger Catholic theology of the Scriptures.
I can take you to Catholic churches in Dallas that I love and consider to be firmly based in the Scriptures, but I can also take you to Catholic churches (especially Hispanic) that I believe would shock you with their practices.
I'm certain that you could. Of course, by the same token, I'm sure there are Protestant churches that would scandalize you with their crassness or their superstition. Even Rastafarians claim to be a Bible-only Reformed religion.
The Catechism of the Catholic Church is the best guide for finding out about the doctrines we really believe, and the General Instruction on the Roman Missal is the best guide for finding out what liturgical rites we really follow.
Amem to that! I was with a friend earlier -- a Hispanic Catholic who is now a Protestant -- who was involved with a church several years back that was into the "gold dust" movement. I brought her back into reality from that sham. She found it particularly embarassing to buy into that fakery (for a couple of months at least) because of her experiences with brujas and curanderos in her childhood.
I own one. Plus I own Ludwig Ott's book. :-)