Couple of tips for the Clearstart.
1. Since we usually start on starboard tack, I wear the wrist watch on my right arm (sheeting hand), which is always right in front of my face. Easy to see and watch where that hold may open up for you.
2. I program it for 1 minute, and if a 3 minute sequence, press it 3 times; 5 minutes, 5 times.
3. Best feature is the Sync.., if you miss the initial flag, you can hit sync on the next one and it will get you right back on time
https://store.catsailor.com/pc/viewPrd.asp?idproduct=13178&idcategory=124