So i'll start by explaining my curren set up.

I'm a lead singer/ lead guitarist for a blues, island, rock trio band who's used to playing solo in a restaurant on an acoustic guitar, thus having limited experience playing with others. The band, which consists of my cousin on bass, my friend on drums and i play really well together, but we have a couple kinks to work out. We notice that when it's guitar solo time that there seems to be a hole left in the music when i stop playing rhythm and switch to lead, which is actually most noticeable in one of our acoustic ballads that is carried really heavy on my strumming.

Now my cousin is originally a guitarist and has just recently switched to bass, improving by leaps and bounds. The reason i posted this topic on the bass boards is because my cousin and i have talked it over and agreed that there's probably something the bass can be doing to fill that hole, something he hasn't learned yet, and something i haven't a clue about, having done nothing but tinkered around with bass at best.

We have all resolved that we definitely don't want to add another guitarist because we don't want to complicate things, and have one more person to rely on for practicing, making gigs and teaching rhythm parts. And i have done the homework by listening to power trio bands like hendrix, cream, rush, the police, and zeppelin (not technically a power trio, i know, but still a single guitarist band). it's hard to solve this problem by listening to them though because many of them use extensive overdubs on their songs, which doesn't help solve this problem at all.

So if there are any tips at all, be it something my cousin, or something i can do to fill the holes, i'd love to hear it.