What is the easiest way to slightly stiffen spine on an arrow without cutting or dropping point weight?

I am currently shooting a martin rug rest, so I know I could move to a stiffer strike plate, but I have not had that good of results when doing that.

Three things come to mind.  Adding weight to the nock end of the shaft, changing the thickness of your strike plate or changing string strand number/silencers.

How about a little more brace height.

I think raising the brace height will cause the arrow to act weaker.

raising the brace ht could help.

..but really it sounds like you're going about this backwards.

simplified steps to tuning..
1. shoot consistently
2. tune brace height to bow.
3. tune silencers
4. tune arrows with tip weight and/or length changes.

Why don't you want to cut the arrows?
..too short already?

I can understand not wanting to buy new tips and heads.

add weight to the nock end(wraps, footing ) and or add footing to the arrow tip end.
add more  or/heavier silencers
go to b50 instead of ff
make a heavier bow string by adding more strands

thank you for all the replies.  I just don't want to cut the arrows.  They have the SLIGHTEST tail kick in them (shooting outside and through paper) and I was just wanting to get it out.  

I think i'll try to move my selencers down a little or even add a second pair in there to see if that help.  

I really don't want to cut the arrows because i'll have to take the inserts out, etc.  Much easier to make a change to one thing that 6.

Lowering the brace height is like adding to the side plate there by causing the arrows to act stiffer. The angle change has more effect than an insignificant change in power stroke as it may only need to be untwisted 3 twists to do the job.

Toothpick behind the side strike plate.

QuoteOriginally posted by BenBow:
Lowering the brace height is like adding to the side plate there by causing the arrows to act stiffer. The angle change has more effect than an insignificant change in power stroke as it may only need to be untwisted 3 twists to do the job.

x2

slipping a thin shim(piece of plastic from a milk jug, 1-3 to tune) under current side plate  will stiffin it up and take less energy out of the system like adding mass to string will. You won't see much fps change with a slight brace height adjustment either.

May consider adding strips of plumbers tape under the side plate until you achieve the desired flight.

Are your arrows fletched, you can cut from the nock end if you have some room between your nock and feathers.

So many of these kinds of threads but....

This one has a concentration of mostly excellent and diverse suggestions. The brace height impact on dynamic spine was the toughest question on an NAA Level II test back in August 2002.

When my arrows start to shoot left (shooting stiff) I know my sting has stretched a bit and I need to adjust my brace height up a bit. My wife had a terrible time hitting left until she told me. She thought it was her form. I raised her brace height a bit and everything got back to where she wanted it. In your case, if you could lower your brace height I think you will find the issue will be resolved. It is just the opposite of what we have experienced and I expect you could get back to where you want. I always check my brace height because I know it can make a difference.

I have a set up that will give me just the slightest tail kick as you described. I shoot those arrows cock feather in and get perfect flight.

It probably doesn't effect spine but it's worth trying.

I know from recent experience it doesn't take much weight on the nock end to change things up. A wrap did it for me.

Put those arrows on a shaft stretcher, but don't overdo it, take it slowly.

QuoteOriginally posted by creekwood:
Put those arrows on a shaft stretcher, but don't overdo it, take it slowly.

Do you have one I can borrow? Mine broke...

Move your silencers further from the limb tip.  It has a bigger effect than most imagine.  Also, make sure your brace height is where you want it first.

First thing I'd do is take a few twists outta the string, and also move my silencers in half inch increments towards my nocking point until the desired results are met.

In saying that...A very slight nock left high kick is my end result goal.