Transferring Hibiscus bushes from one side of yard to the other..?

You don't say where you live but I have had good luck in Fl. transplanting hibiscus just about any time of the year. Some things to keep in mind - plant leaves will sunburn if they haven't been grown in the sun. You may want to provide partial temporary shade. Cut about a third of the leafy top growth back before digging the root ball. This helps to compensate for the roots that will get cut by digging. A few weeks before I transplant, I take a sharp shovel and cut around the plant defining the root ball that I plan to extract. This gives the plant time to adjust or shock before the actual transplant. Good luck!