Here is the go to launch pad from Aerotech for launching large (advanced) model rockets - E through G power. This launching stand has the following features:
Fully adjustable elevation and azimuth.
2 piece threaded 1.19m (4.75") x 6.25mm (1/4") launch rod.
Easy swing-arm loading; it can lower the launch rod to a horizontal position.
Removable aluminum legs.
Angled metal blast deflector plate.
Accepts rod sizes: 6mm, 4mm and 3mm (4mm and 3mm rods not included).
The loaded rocket is positioned 60cms above the ground near mounted wire clips that hold the launch controller cord, making igniter
hook-up convenient and comfortable.
A launch-angle control wheel simplifies adjustment of the launch elevation of the rocket.