Eh I like how Master Ball looks with Shiny Kyogre. I guess Premier could have gone with it but all the preparations involved with level 70(or 80?) Smeargle(s) due to only 7 badges.
That and Master Ball means I can record the encounter and capture easily in one take. I would have had a video for my Registeel actually but I dropped the phone right at the end of the video before ending it, causing it to not save. -___-
If you tape it the battery doesn't move. When the cart is closed up there is very little vertical space to move around.
Huh, I never thought about this before but on the top cover of the cart on the inside there's an indentation for the battery. If something small were to be stuck there I think that would help out a bit. Sometimes it's hard to get the battery to make contact.
I haven't had the battery ever move out of place once it was in though.
I used tape. I ended up buying another battery for my other cart (well at first I thought the battery in Emerald was dead but it wasn't) and it was thinner than the original. Had a hard time getting it to connect.
Tape makes it easier if you're trying for the same spread repeatedly.
If the battery in the cart still works you can just separate the battery from the top arm contact. When you want the battery to be "dry" you can slide in a piece of paper or something to keep the circuit open. By not separating the battery from the bottom arm contact it makes it easier to keep the battery in place and still have the circuit closed.
If you have Pokémon Box Ruby and Sapphire you can force Method 4 on certain stationary Pokémon. I had the Regis always M4, and Rayquaza was about 50/50 M4 (more so on my Ruby cart than my Sapphire cart), while Southern Island Lati@s was M1, along with Kyogre/Groudon. Also it seemed to be more likely if I encountered it immediately after loading the save so I simply waited at the menu where you choose the save until the time came.
Because of that I was able to capture a hex-flawless shiny Naive Rayquaza on it (loaded a backup of the game on my Wii, close enough to retail imo...). Transferring 210+ Luxury Balls sucked big time though. PRNG seeding for the R/S ROMs uses the RTC value of the GBA cart. The R/S ROM runs a bit slower than on a GBA... I was about 3000 frames short after about 580k frames compared to GBA.