You guys and gals mentioned quite a few possible solutions, so why not a few more?
1.
It would be akin to the 'V' bow catcher on the centre line of the bottom of your pen. Just what Cisco mentioned but on both sides.
It would be two breast lines (fairly thick ones, preferrably laid, hawser like ones, baized to minimise scratching the hull) fast to the centre line of the bottom of your pen and led to the appropriate point which you have to experiment with, on your port and stb.. The stb. side should be negotiated with the neighbour as the line would be cleated to his yacht. Also an arrangement should be made with same, for when he sails away

.
Or...
2.
I am thinking about a 22.5inch truck tube on each side of your bow. Or two.
Strategically placed to fend you off every time you are coming in. They last for years on the sun and if one makes a cover for them, they are for forever.
Just a thought about your "mates" who were playing you at the bar, after your near accident. Did they ever thought to shut up and give you a hand? (Gee that part pissed me off... no wonder, l am called a misantrope.)
Also, you are paying a pretty penny for that pen, l presume. So why not giving the dockmaster a call when you are coming in alone? It is his responsibility after all?!

(The 'mates' can chew the cud on that!)
As l sail mostly single handed, l feel your anguish parking your new yacht in an unhandy pen. I am lucky as l have a mooring. If l missed it first time, l just come around again.
I am puzzled. What on earth are some of you talking about when mentioning "bridal"????? The nautical dictionary does not know of it.
Is someone trying to hitch the blow up doll?