seiding?

That still doesn't make sense. If I replace the word "snare" for every time you say "seid" or "seiding" it doesn't help us understand what you are asking.

Are you talking about the bottom head on the snare drum? The snare head versus the batter head?

You said ...  "which seiding should I use on my snare drum?" Translated would be .... "which snare should I use on my snare drum?"  That doesn't make any sense to me.

Then you mention "strings" which could be the Snare Wires ... or could be the snare string which holds the snare wires on the snare strainer.

We aren't trying to be difficult; we just need more clarity in your question.  

I can't imagine the force needed to knock the snare wires out of their solder!

Actually, I can't imagine you being a heavy hitter, even being a factor in the strings not staying in the strainer. It would more likely be the length of the strings, or tensioning of the strainer, or how tightly the screws are torqed in the strainer or butt plate.

Some snare wires have both holes and a slot on each end so you have the choice of using either strings or straps respectively. I always had more luck using straps made of folded-over "strapping tape" that is meant for wrapping packages for shipping. The metal grabs the softer plastic of this tape yet the tensile strength of the vertical pull is reinforced with those cellulose strands.It stays put, it lasts, and it's cheap.