This is what I do (been doing it for the 11 years I've been smoking).

Scrape your pipe, you can get like 3 types of resin for the most part.
1.There's the gooey stuff (sticks easily, tough to get off skin)
2.There's the dry flakey resin (usually found in the bowl itself, burns quick, tastes gross)
3.There's the resin that's perfect.

The perfect resin usually comes from a bowl that gets smoked often enough where it doesn't all dry out, but resin that wasn't just collected from tuesdays smokeathon. If it's been in there a little while it seems like the heat from other smokings may dry it a little but, but not too much. This allows you to pull it out of the pipe and it's almost a hard shiny substance. These balls you can roll into a ball.

Another tip. Have a box that contains various tools. If you need something long and thin, perhaps eyeglasses screwdriver, or a safety pin. I've found that a paperclick doesn't work too well because the resin doesn't like to stay on. I also have a razor blade in my box. Just in case someone busts me while I'm scraping. just kidding heh. Sometimes the resin you get out IS too gooey to roll into a ball, so I scrape it off with my razor. I let it sit on the razor and keep adding to it when I get a good amount of goo.

Finally when I'm done I get another tool and take off the goo ball and try to get it in the bowl without really touching it, especially with your skin because it'll stick well.

I try to put something else down if you're smoking either goo resin or perfect resin. lol I usually put the dry powdery scraped resin back in the bowl first. This way once the goo resin melts and bubbles, it won't wind up leaking down through your pipe back into the reservoir after just one hit.

Ok, I think that's too much information on resin. I'm sure many other people have many other ways of doing this sort of thing.