Introducing Thearf.
Read about me.

One basic aim here: 55%.

Unfortunately with the -115 odds used here for tennis totals, that'll only yield 3% RoI. Take the same plays at best market price and -104 is possible, which produces 8% RoI - this is usually pinnacle, but occasionally matchbook, sbo, ibc, 12bet, betonline, and thegreek (and recreationals like ladbrokes/bet365/paddy can better those sometimes, but you won't last long there before getting limited).

Otherwise, what to say: my approach is highly mathematical, many dozens of factors weighted and sifted together. That produces a win estimate %, which I then play at a 1/4 Kelly stake (here I use $100 to mean 1% of bankroll). That's pretty conservative, so if you're going to follow these and want a bit higher profitability, add 33% to the stakes and you're at 1/3 Kelly. I wouldn't go much over that, and certainly not over 0.40 Kelly - the upswings/downswings in totals betting get pretty wild up there.