I do miss your L15 postings and pleased that you are starting these up again.
I am not one to give sound advice but I feel that you will get more returns if you include what I call some "players" in your bets e.g. selections up to 9/1 (in theory they have at least a 10% chance of winning) and not just all outsiders.
I think that the L15 bet is a great bet for people who just want to enjoy a day's racing without losing a load of money. Even if I do 4 x 0.10 L15's on a big race day like a Saturday it will only cost 6 points if I don't get a winner. Also with Betfred, there is a good chance of not losing too much because of a triple payout on a single winner.
To show I have no illusions about my selections being successful my L15 balance to date is -84.99 and my Racing Chat (RC) balance including L15's is at -128.57 YTD. I seem to have had quite a lot of seconds recently with my singles bets and am seriously considering abandoning singles bets. I have lost almost half as much again by trying to pay for my L15's with singles bets.
All things considered, though £130 for four and a half months of daily racing entertainment seems good value for money to me.
Good luck and I look forward to seeing your regular posts