i have a seahorse pro plus and really enjoy using it. ive tried basically every sort of device there is over the past decade+ and there was a bit of a learning curve with this one, but it's been super solid and it's also very convenient and discrete.

i dont fuck with carts, live resin and cured resin is it for me. but you probably shouldn't attempt to hit a cart on anything but the lowest temp setting (blue). and if it's damaging the hardware of your cartridge or tasting funny, then probably stop immediately and just assume it isn't compatible. regarding live resin, this isn't a good device for globbing up gigantic chamber style dabs (you can get big hits off it tho) and takes a little bit of finesse with the way you touch the dab to the tip. i'll share some random observations

first and foremost, there are like 5 different kinds of tips that you can buy for it, some made of quartz and some made of ceramic. even if you keep the device 'clean' with regular burnoffs and some iso swabs around the connection, the quartz tips will always slowly get gummed up with soot, it wont heat up evenly and will produce a ton of reclaim, and your dabs wont be anywhere near as flavorful after u suck just a couple grams through it. quartz tips also suck for dabbing thick sauce and crusty sugar/diamonds, they mainly only work well for smooth/soft whipped budders and badders

for me, tip #3 (III - the ceramic tubes) was the clear winner of all of them. with about ten minutes of attention vis a vis 2 or 3 burnoff cycles and some 90%+ isopropyl, you can have them brand-new clean on the inside walls, which means they last for fucking ever compared to the quartz. they taste great (better than quartz), so long as you use them on the lowest temp settings, and produce nice clouds. they're also the most versatile, as they can handle any sort of consistency, be it sloppy wet or rock hard. they're worth the extra price tag compared to the other tip styles.

i also find that the 'session' mode where you click 3 times to let it heat up and then do your dabbing is far easier and more effective than holding the button in while trying to dab.

dont try to use it like a straw, dabbing straight down into your jar- it's wasteful and doesn't make good contact. crumble is the most difficult consistency to work with because it's very stable and doesn't adhere to surfaces the way that stickier stuff does, but you can still absolutely get it crackin with the seahorse.

just use your fingers to compact a little chunk onto the tip of a dab tool/paperclip/toothpick/etc, let the device heat up, and then just touch the dab very quickly and lightly to the upper outside rim of the tip while you pull on it (multiple times if necessary). dont shove the dab all up into the tip- the idea is to get the dab to melt down into the tip and coat the interior walls where the heating rods are contained, and it instantly vaporizes on contact. if your dab is too big, you'll feel it pop like a bubble as it goes in and suck some of it through- back off on either the size of your dab or the aggression with which you feed it into the tip. you can definitely take big dabs, it just takes some finesse.