There are different approaches to this, based on:
- how early you want start competing as beginner?
- do you need an overhead serve if you are not using reliable moderately paced serve anyway?
- if you do compete (socially or in some league/ladder/tourneys), maybe go with tap-in second serve, while learning solid spin serve with your coach?
I’m a kind of guy who spent months practicing to build some level of techniques proficiency before hitting singles matches (got into doubles with farther, but that was low-pressure low-expectation)
- Doesn’t mean I immediately was better with all the techniques… I did struggle…
- Doesn’t mean it’s best for everyone, some just are happy playing with what they figure out during the process
Spin serve is great to have as a 3.5, and if it’s not something crazy aspirations like 6’ bounce kick, it’s all about smoothness, feel and control. Confidence to start points, to not get attacked, to get some freebies.
Meanwhile one can perfectly go with eastern grip flat serve, but it’s not worth investing past some stage. So back to the original post, there’s no particular level of flat newbie serve to achieve before learning spin serves. Whoever wants to progress with the serve and make it up to higher levels or develop into a weapon, can start working on it right today. The only prerequisite, or maybe standalone skill, would be consistent toss.
i used to think that you should aim for a pro level stuff first and you will find a way there, but after years of doing so, looking back I realized that my journey would've been easier if I do one small step at a time instead of trying everything at once.
to get to where they want to be, first yuo need to define the scope very clearly that anyone can understand without a doubt
simply say a flat serve or spin serve isn't that clearly defined yet, there are yet a lot of unknowns to those players and foundations missing building up to even get started to really think/learn this through.
by understanding how to make a serve in without knowing how to serve is more important, whether they want to move up and do more that is up to how much they want to learn to get there then the next step would be to slowly ask a bit more advanced question such as
1. Don't think about spin, flat. Let's hit a serve with continental grip, doesn't matter what serve, let's see if you can land it in 100% of the time, starting from the service line (not base line)
2. Then slowly move it back to the base line and see if it still works
3. Now switch sides to ad court and repeat
Those sounds simple but usually if you want a solid foundation, better to spend the time to really understand them so moving up would be a lot easier
Similar to how people don't just teach their kids college level algebra on their first day of school, they start out with simpler stuff like counting, memorize multiplication table, etc.