If you do mind a response from a ways 'out of left field'... but we have had difficulties with some boats in our area having "gift" phrf ratings since the 70's. (!)
I used to race a lot in our prior two boats and always raced in a One Design or Level fleet. A local club encouraged this, and when there were not enough boats entering that were close to my speed potential, I built up my own fleet. Before the internet was commonly available it took a number of phone calls (remember those?) but I was able to always get the required minimum # of five boats on a starting line.
We raced and were scored 'level', i.e. like one-designs. It was WYSIWYG racing and loads of fun. I had a Niagara 26 and recall some of the best nights going at it 'hammer and tongs' against a well-prepared Newport 28-2 and a Santana 27 with faired fins..... finished a twice-around course in a fresh breeze and won by a length.

Lordy, that was fun!!
As you might guess, once we had established a "fleet", the RC would ask/get permission to add other near-rated boats to it. It was essentially one design scoring, for boats that did not otherwise have enough sister ships to race against.
Nothing will ever really be better than OD racing, but this was and is the next best thing.
I imagine that anyone can do this anywhere. With web sites and email, the organization would be easier nowadays. Basics never really change.... ya just need a way to (fairly) compete and go out and really tweak your boat and have a lot of fun. Sometimes, when you make the fewest mistakes... you win a $10. trophy to gather dust on your book case.

Regards,
Loren