There is a real simple trick to do it. There are two types of couplings, standard couplings and "repair couplings" A standard coupling has a raised ridge that serves as a stop in the center. That insures that each section of pipe is inserted deep enough into the coupling to effect a good joint. This type should always be used for new construction. The "Repair couplings" have no internal ridge stop. A repair coupling can be slid entirely onto one pipe, then when the pipes are aligned in the proper manner the repair coupling can be slid back over the joint. Another option is to use a common coupling on one end of your repair and a rubber "Fernco" or "Mission Band" on the opposite end. The Fernco would be placed on one pipe then slid across the joint as described above.

We like using the plasto joint stick.

If you want stainless, check out Kraus sinks on overstock or expressdecor. Kraus sinks are made with the thicker 16 gauge stainless and come with sink grids free. Having said that, I agree with MizLizzie that the Blanco Silgranit is a preferable material to stainless steel. I am on my third kitchen reno, and have had two Silgranit sinks so far. They're so great. No scratches, no water marks, always looks clean. Sorry MizLizzie couldn't find a color that was right for her kitchen, but IMHO, the biscuit color (if you want light or cream-colored) or the anthracite (if you want dark-colored) go with everything, and there's a bunch of other colors too. Anyway, I'm never going back to stainless, no no.

Have you heard of Aeratis?