Apta launcher was good , probably the best out of most the alternatives, as long as you had a good pump.
my throwing was not great , just practice for 15 mins once a week and it will improve massively over a month or so.
big shots are ok , with out sounding like a wet wipe the forces of what you need to propel 12-14oz bags up a tree are potentially lethal , didn’t some one die a year or so back when a pole collapsed or elastic broke ??? , I would just buy the stine one and save yourself the time and have some piece of mind.