Yes, usually adding a few words on covers helps, especially for Reels/TikTok where people decide in under a second whether to tap.
What works best in practice:
• Keep it short: 3-6 words max
• Make it outcome-driven: “3 Skating Mistakes”, “Beginner Toe Stop Drill”, “How I Improved Balance”
• Use big, high-contrast text (mobile first)
• Keep placement consistent so your page looks branded
• Don’t repeat your full caption, just add the hook
Quick test idea: post 10 videos with text covers + 10 without (same style/content), then compare profile-tap rate and watch time from profile visitors.
For your niche, I’d definitely test text overlays because tutorials/tips usually win from clearer hooks. If you batch content, templates make this way easier (we do this inside PostWaffle, but Canva templates work too).