im with hammurabi in where i play.

but if you wanna do some fun stuff that looks cool and doesnt matter how high (or low) your strap is, you could try some of the following:

1. if you are on a stage, you can sit on the apron (the edge) of the stage and play the solo like that. people standing/in the front row love that.

2. lay on your back and play!

3. put your guitar up on your shoulder and play

4. figure out an ingenious way to get your strap pulled up a little bit before your solo, then back down afterward