If a kid has a real passion for something-be it sports, music, drama, etc. they have an inner motivation and will not need to be pushed to practice, work hard. My son would walk around the house at a young age w a glove on his hand throwing a tennis ball around. He hits off tee 4-5 times a wk, indoors/out depending on season. Got into video games at age 14-mostly sports ones, but finds time to work in baseball because he loves it.
imo if a kid is not really motivated to put in extra time esp in HS then don't waste money getting on a travel team. Sometimes it's the parents that have the dream of playing sport in college not kid-they just like the social aspect of playing some in HS. I wouldn't waste the money doing more if kid doesn't really have passion inside.