Hmmm.
Remember the PANS-OPS procedure is designed in 25° AoB or 3°/sec - whichever is the lesser - at the maximum speed for your category for that segment. If you fly a shallower angle of bank, your turn radius will be larger and you will very quickly find yourself outside the protection area.
However, if you are so concerned about maintaining a lesser AoB for reasons you describe you could calculate the radius of turn at the max speed, then using your slower speed work out the minimum AoB to maintain the same or lesser radius.
There are a few other complicating factors with this approach though.
There is also a school of thought (pushed by a large flying school at MB in the 90's) that for Sector 1/Parallel entries, after station passage you should hold heading for 15 seconds before turning parallel outbound. This is wrong. The procedure is NOT designed for this and you may soon be outside the protection area.
Mach - Glad to help. Its funny how something so simple is so hard to remember! I had the same trouble...
Chimbu - I wasn't so much thinking of Miriams, rather what fun can be had with both of them on different people.
You've been in SE Asia too long methinks.