Do you have time for a side hobby like racing as a 88m?

Well Nick 88M was one of many MOS I had it happen when I became a support platoon sergeant while at fort riley KS. Along with 77F at fort Ord became a 55B ammo sergeant that was a hard course also had 11B 11M had some great times never thought you could get a Hemmit stuck but we did in 1992 and had to end up using two tank retriever's piggy backing off of each one but still had fun times

You pretty much have time for any hobbies in any MOS as long as more "risky" hobbies are cleared through your chain of command. Now if you're asking, "I have a race at 1200 next Wednesday, can I leave work early to participate?" The answer is probably a no. Of course if your NCO can swing it, then who knows if they will allow you to or not. Its very dependent on the person in charge of you. But if you just mean you like to race on weekends or days off, then yeah you have time for most hobbies.

As a reservist..yes