By "hand launched", I assume you mean with the boat on dolly with floatation tires. In that case yes.
If you mean simply with a couple of transom mounted launching wheels with turf tires, then maybe. In this scenario, you would want to have 2 people launching (1 on each side near the bow). If launching this way, do the following to avoid causing damage to the boat hull (especially if it is not a commercial grade SIB).
Run a 2-3" wide webbing strap under the bow and have the launchers hold the strap rather than the top sponson rope directly. Feed the strap between the top grab rope and the sponson on each side near the front to keep the strap from slipping forward.