Correct use of handicap ???

[cape cod beachfront golfer]

I am a member in a 9 hole league which uses both gross and net to pay prizes each week. The course I play on is a par 70 BUT it is not evenly divided. The FRONT is a par 36 while the BACK is par 34. In the league you can select to play either the FRONT or BACK, however the BACK score is adjusted. Since I am a 13 handicap 6.5 is subtracted from my gross score for the FRONT to get a net score. EX: 40-6.5= 33.5 net. Simple enough.
BUT sometimes I like to play the back. The method used to determine net score is to take your gross score, subtract your half handicap, then ADD 2 strokes. EX: I shoot a 38 on the back, subtract 6.5, then add 2 strokes to get 33.5. (38-6.5=31.5+2= 33.5)
This appears to balance my score against par as I shot 4 strokes over par on both sample rounds and ended up with the same overall net. Can I assume this is the correct way to figure a net score when you have different front and back pars??? I always have lingering doubts about what I call my "2 stroke backside penalty?" Suggestions???

[iacas]

What are the course ratings and slope for the back and the front? That'd be the fairest way to do it. They could then award prizes for the differentials (minus your handicap) or something.

With the current method, lower handicappers would most likely play the front. The par fives would probably give them an opportunity to score that you lose out on by just "adding two shots" on the back. But for higher handicappers, they might want to play the back nine, since the par fives tend to be where they lose more strokes.

[cape cod beachfront golfer]

I will check into the Front/Back ratings...
I agree the par 5s are where the low handicappers score...
BTW Because we play early the greens are sometimes inconsistent...
By the 5th hole the greens are usually dry and rolling better.
That is one of the reasons I like the backside for scoring.
Each side has one hole that stands out as the highest risk...
Being a 9 hole format one bad hole usually sinks your chances.
Since under par to 2 over is usually needed to cash gross...
my chances are left to a good net round.
I have suggested we add skins but the older guys say no.
It seems they tried it years ago but the birds came on the same holes.
Seems there were often NO skins (birdies cancelling out birdies).
They then had to payback skins money or do a carryover to next week!