Don't know how big you are, but one common issue is the top speed of stock engine Mastercrafts. Many will top out at 43-44 and with a footer in tow might max at 41-42. This usually isn't an issue if you stay off the boom. But longline footing and certainly doing more advanced tricks may require more speed.
Early 90s Malibu Response, or a late 90s Malibu Sportster may suit both needs well. I don't believe the quality is as nice as MC, but this sounds like a "toy" purchase and for slalom, barefoot, and having enough top end speed, IMO these boats would work very well for you.