I wasn't thinking of connecting to people who actually want to be pitched for other than practice reasons. However, it's probably better to just start participating regularly in some online meetups, e.g. those to be found on Indie Hackers www.indiehackers.com/meetups - I'm sure there is plenty of chance to practice pitching there, if you just want to practice your pitching skills. Also pretty much the reason I didn't pursue thie idea more.