Dunno what Tigerseal is, but you can use Sikaflex to tidy up flaps and gaps on strakes. Don't use it to secure an entire strake - that's a 2402 job. Don't use the paint below the glue - just follow the gluing instructions having cleaned and degreased the hypalon properly first.
Tec7 is a handy (cheaper) hardware find and works something like Sikaflex.
McNetts Aquaseal/Aquasure etc is a handy urethane sealant for small jobs - when uncured it has no adhesive properties, but forms a good bond and seals very well once hardened.
Why do you want to paint the RIB? Unless it's already fecked (down to the weave), I wouldn't go there. There are lots of ways to refurb tubes that don't involve paint. Show us a pic and we can make suggestions.
BTW, one sure way to remove strake from a RIB is to run it with tubes that are under optimum pressure. The previous owner may have done this.