I have small fat pad and when I am grinding while I am as deep as I can go, yeah, they feel more than they see. Actually, having a decent girth on a somewhat average length makes the look of it deceiving. Once, I got a remark similar to “Ah, you can go that deep, nice!” which made me suspect that she thought from the way it looked that I wasn’t long enough, or at least as long as she felt me to be.
One thing is certain, BP is easier judge for gains. Losing weight won’t give you better BP measurements. Enlarging will.