Old Man-
If you are having trouble pulling your sink-tips out of the water, let me give you a couple hints.

First of all, after the fly has swung below you, pull the tip within about 5' of the rod tip. While facing directly downstream, bring your rod up high so that your reel is about face level. Throw 1-3 roll casts which will pull the tip up to the surface...once the sinktip is up to the surface, false cast and pivot around to the angle you would like to make your cast and cast.

Make sense??? Hopefully it does!!