It’s really hard to answer (which is why there are so many posts like this that I can’t reply to), because for me I have the same answer 99% if the time.
Namely: the answer to this question is a function of your system. Therefore, unless someone is running the same, or very similar system, also WITH similar goals; how can their answer be relevant to you?
You are running a system to take emotion out (music to my ears), have you been able to backtest?
Anyway, that said, thoughts from your post:
Is it just a matter of switching brokers?
Are there auto tools like a chart program that will just send you an alert when you need to do something?
My hold time is longer than yours but checking in less or more often doesn’t make much difference in what I run, so the persons suggestion to check moving out to weekly (for your hold time) is worth a look.
Next, I’d challenge the idea that it’s that much hassle to do a few EOD percentages. Are you doing this on a calculator? Use excel or google sheets to calculate for you so you are just plugging in 8 EOD prices. Or hey, have it set to get the prices for you and calculate!
Finally, you said, ‘I always use stop losses to exit positions as my trading is rules based...’
Do you realise that having no stop is also a rule? Have you tried time based vs percentage, or opposite signal, for example?
Finally, (really this time), you correctly said that the, ‘dilemma is trying to pick a level which will allow the stock to bump around a bit without getting stopped out prematurely while protecting the downside and locking in profits.’
Well, that’s a good observation. You may in fact find that no stop works better. You could also play around with tying your stop to the volatility of the stock (very common) rather than a percentage, to allow wild stocks to jump about and slow movers not so much room.
Best of luck, and welcome to the forum!